it turns out with a projectile-- usually there is a lot of air drag like with a cannonball. but in the absence of air drag, that horizontal component of speed stays the same. that means it will always be kind of going this way. i'll tell you an interesting application of that. you know, when you throw a rock off a cliff, it keeps going out, out, out, and it gets steeper, steeper, steeper, right? it will never get so steep that it's vertical, 'cause it will always have this component of speed, you know? it's like, where i live-- i live at a place on the 32nd floor of a building, okay? and down here there's a swimming pool, and up on the top-- sometimes i think about, well, rather than getting the elevator, come all the way down, and have to come out open the door, go through the gate, come in and-- why not just.. [descending whistle] and i have to wonder if i could make it [laughter] now, here's the thing that's kind of interest. you kind of look over there and you wonder if you could make it. well, it turns out i'm so high that it'd take about four seconds for an object to f

. >> exploding projectiles. >> it was just like a rocket coming down. >> massive flames. >> it was hairy. it was hairy. >> i just closed my eyes and go oh, boy. >> enormous fireballs. >> pan back. pan back. just had a huge explosion. i thought this is it. i better at least catch it on tape. >>> "caught on camera: boom." welcome to "caught on camera." i'm contessa brewer. just going through our daily routines, we can be surrounded by dangerous materials and equipment and not even be aware of it. usually we have nothing to worry about because compressed gases, high-powered machines and blasting materials are safe when used and stored properly. but if one little thing goes wrong, the consequences can be disastrous. a fire breaks out at southwest industrial gases in dallas, texas, on july 25th, 2007. this is no ordinary fire. on the lot are several hundred tanks filled with compressed gas, including oxygen, helium and one of the hottest burning gases of all, acetylene. >> acetylene burns at about 3,400 degrees. it's used as far as what the common purpose knows mostly in welding and cutting.

when the projectile gets out here, 9, less than 9, more than 9, how many people say less than 9? ooh, how many say no, exactly 9, it'll always stay the same, i learned that over here? how many say, well, i'm a free spirit, i say more than 9, 'cause it's going against gravity and gravity gonna kinda push it out there? now wait a minute, wait a minute, it's going against gravity, gravity gonna push it out, oh, wait a minute, no, no, if it's going against gravity, oh, i think it's less than 9. how many of you saying that? just like if i take this thing and throw it up in the air, when it leaves my hand, let's suppose it leaves at 9 feet per second, anyone know if it's gonna be more or less than 9 feet per second when it gets up here? common sense, come on, gonna be less, going against gravity. ain't that going against gravity? up here, gravity is pulling it to the center of the world. gravity pulling it like that. now look at this. it's moving like that. there's part of that gravity going against. this part here, gonna change course, so it won't end up over here. it'll end down here

forensic information to find out where the bullet came from and to trajectory and what type of projectile looking at shot into the course >> shot the gate before is there a big purse attached to the base? what do we know? >> just coming back into racing form the brace it was taking part in practice race bellperson attached to the race at all strictly to qualify back into racing regularly >> also earlier in the day since eliminating that anyone with information call >> eliminated driver of the white pickup truck passer-by interested in the officers work >> anyone with information contact the lake county in the end up sheriff's department for more information >> scary discovery this afternoon three live grenades based in lake view neighborhood several buildings evacuated west newport police bomb and arson investigators be seen at around 4:00 answering a call man in a bomb suit to safely removed the world were to grenade people allowed back into their homes. do not believe any criminal intent. ntsb investigated cargo jet clipped a commuter jet tarmac 1:00 this afternoon wing of the 747 eva c

it was there that he was shot in the head by a police projectile almost ended his life.is now recovering from a fractured skull. he was one of more than 40 veterans who hurled their war medals at the two gates in chicago. [♪] [♪] >> this is democracy now!, democracynow.org, the war and peace report. i'm amy goodman. today, we bring you a memorial day special. honor the dead, he'll the wounded, stop the wars. that was the cry of iraq veterans against the war as they hurled their war medals toward the gates of the nato summit. shortly before the women's of afghans for peace led a protest in chicago, i had the chance to conduct an interview with them. >> we are a local afghan-led peace movement speaking out against the occupation and war in afghanistan. we are here to protest nato and call on the two representatives to end this inhumane, the legal, marbury or against our home country and people. >> my name is gramm. i spent three years in the military and deploy to afghanistan. >> burke when were you in afghanistan? >> 2005, 2006. >> where were you in afghanistan? >> abbott

police have warned merchants to bring in sidewalk signs and decorations that could be turned into projectiles. lieutenant clark pennington speaks for the police department. >> if you don't feel comfortable, you can close down. >> downtown, some merchants will close. >> just in time there's a brick through the window, we don't want our valuable coins out there for someone to take. >> reporter: some others are planning to be open for business. >> new folks in town and tourists, we're excited tact. >> police underlined that peaceful protesters have every right to be here and will be respected. but police say they'll be ready if things cut the other way. in frederick, scott broom, 9news now. >>> help for homeowners with under water mortgages is on the way. bank of america announced it will reduce the principle balance on homes of 200,000. they must owe more on the mortgage of what the property is worth and be at least 60 days behind on their payment. the write off will help homeowners save up to 35% on their house. the principle reduction offer is part of the $25 billion mortgage settlement agree

police have warned merchants to bring in sidewalk signs and decorations that could be turned into projectiles. lieutenant clark pennington speaks for the police department. >> if you don't feel comfortable staying open during this large event, you can close down. >> downtown, some merchants will close. >> we don't want our valuable coins out there for anyone to take. >> but some others are planning to be open for business. >> a lot of new folks in town and tourists, we're excited about it. >> reporter: police have underlined that peaceful protesters have every right to be here and will be respected. but police say they'll be ready if things cut the other way. in frederick, scott broom, 9news now. >>> now some protesters have already declared instructly because of the threat of the mass protest in chicago, they moved the summit to camp david instead. the summit is planned for may 18 and 19th. >>> in virginia, the charlottesville city council is recommending the state change how it punishes people for possessing marijuana. it was all part of a controversial bill to deprioritize marijuana arrest

occupy protesters are giving to protect against police use of nonlethal projectiles. protesters used them to aggressively push back. proposed band would carry fine of $1,000 and up to 6 months in jail. >>> here is a facebook -- closing at $31 a share. it's well below the ipo price which was set at $38. >>> on the bottle market stocks traded higher for much of the day as l fizzled late and start dow up one point. federal regulators shed some light on their investigation of jp morgan chase and multi billion hedge fund loss. officials told the senate banking committee they're looking into what j.p. morgan told investors about the risks caused prior to the trade cost $3 billion possibly as much as 6 billion. blamed the lost on quote sloppiness and bad judgment. in just a few hours from now cal tran will shutdown eastbound lanes for busy highway as part of an on going widening process. the closure will run from love bridge road in pittsburgh to the summerville exit. tonight through thursday night from 11:00 p.m. until 6:00 a.m. traffic in that area will be old century boul

. >> projectile, shot her in the face. [ laughter ] >> oh -- >> cannon-like. >> that looked like mashed >> oh, my -- >> it's pretty gross. this is gross, but you've got to account for all the gross things on the internet. rate this from one to ten. >> 12! >> i give it like a seven. ip was able to watch this front to back. i didn't have to turn away so i give it four to five. >> i give it 100. >> 100? >> the most shocking part of this individual joe that this guy had a girlfriend willing to do that. >> to do that, right. >> in the history of popable cysts, this once definitely took it. >> couldn't watch. computer is shut. if want to check out this entire video, head to our facebook page, and tell us your own gross oh meeter scale. how gross is this video? >> from once you -- ah! >>> cantaloupe is a very bad dog. you leave the room for a minute and cantaloupe would have like, something off the desk in her mouth, and so this girl was like, let me find out what mip housemate's dog is doing, and how she's getting up on the desk. >> cantaloupe is jumping. she doesn't even look like she's clos

and they have it so well but if i'm going to be the big now from both for the fire projectiles and it can also fire on the winter i wouldn't. their foreign country said by this kind of military you know what i want a material i think show russia is an exporter of arms around the world i think it's number two. oh yeah you know. these are so worked out how with the. recall and. that's how we sort of. do two meters. and then the intent is to engage and destroy and be part. of that is conference emplacements in all. three it's kind of interesting as again remember you know both of us are child children of the cold war ok. so we're betraying our age a bit but. for a moment american perspective this parade used to be watched closely with them what the soviets have new this time ok and this is you know the criminology at all it is that the same thing today or is this just to show you know russia's military profile ok what i think mostly most was what you said it's mostly the show russian military profile. most of these are these something modern i'm not sure about probably do want to be from

projectile which would allow us 24 mi.that is a bomb basically that led way almost as much as a vw bug when they hit your island in the pacific you knew about its the ship was sitting in the mothballed fleet for the last 11 years appearances soon and there was an effort for a while to try to keep it afloat and try to keep it going may be restored as a museum for the island that fell apart and to the application went back avenue group in los angeles but up so sunday the ship will be towed down to the harbor in l.a. will be there for repairs from the while they hope to open it as a museum on july 1st and i talked to guide is served aboard the new jersey mike mcintyre years ahead say. >>> at this time i was in the navy and it was just my job now that i look back on it was really a big part of american history and today we want to show that's to the american people. i said new jersey and in the high web fantastic feasible history unfortunately lead in the bay area. ,,,, veterans are especially vulnerable to financial ripoffs.

and the most common ied was saw in iraq was the sploasively formed projectile, copper plate, we turn this into a copper dart which would penetrate a lot of our vehicles. we've seen these recently migrate to somalia. in afghanistan, about 80% of our ieds are made with homemade explosives, largely -- largely fertilizer. here's a fertilizer bag, 26% nitrogen. for about $100 they can get this bag, process it and put it into six or 8 very successful ieds. they're ubiquitous. we see a vegetable oil container. you put a blasting cap on it, bury it with the battery beneath it to even decrease the metal silgt and it's -- signature and it's ready to go. >> exactly how much damage would something this large filled with fertilizer be able to do? >> this one can hold up to about 20 pounds, as low as about three pounds can be devastating to a dismounted squad. >> wow! >> 40 pounds to a vehicle. >> you're taking even a big vehicle out with that kind of a charge. >> a big vehicle, absolutely. >> when we look at some of the other kind of technologies that are being used on the dissension side and the

traffic jam which had piled up next to the first explosion site twenty cars caught fire and metal projectiles packed around the explosives caused many injuries many police and firefighters who had arrived at the scene became casualties themselves. now it is of course a region of intense security risk isn't it. the region has seen frequent islam missed terror attacks and government anti terror operations for years now in some recent examples in mid february a terrorist cell with suspected links to al qaeda international terrorist network the members of that were killed in a gun battle with security forces in mid march five police officers were killed in an explosion in mid april a federal security officer was targeted in a car bomb. other explosions also happened that day and also in april a local militant leader who had been wanted for years was tracked down and killed this attack is just the latest in many attacks that have happened across russia's volatile north caucasus region tom thank you so much for that update on at the train pass in that digest i'm holding you more developments as the

we also have evidence of facing projectile points or arrow points from the tips of deer antlers. so, that's another native technology that's being produced. this, and here's -- see, these are shell beads made from this mussel. it lives around jamestown. and this is a production site for these beads because they're all unfinished. we've strung these together, but they are not finished. they are all rough around the edges. if they should be finished, they end up being very tiny. they're like this. and so these are -- since they're all unfinished, then we know someone's in the process of making these. and that would be most likely the indian women, because that's part of their role is to make the material culture in their society. we have a lot of writing from the early period. the most prolific was john smith. and there is a compilation of his work called the complete works of john smith by philip barber we use quite a bit. there were other eyewitnesss, like, other eyewitness accounts, people who were here and they're writing letters back. the communications between the colony and

and they used four for each projectile. so they had a lot of those little suckers down there. we had a lot of big, heavy batteries in the lower part of the gun mount in case we lost current. when the saltwater hit them, the chlorine gas started coming up. so we went out a hatch on the rear and got on the quarter deck. you could see chunks of teak wood sticking out. we felt one bump in the turn. i think a bomb hit on the sloping side of the armor and then went out to the side. when we come out, john anderson and i went out together. he was second class boatman, i was seaman first. he had a twin brother occupy the five-inch gun. we tried to get him but he was on fire and couldn't do it. they brought the barge up the stern of the ship and the lieutenant commander's damage control, i don't remember his name, but he told us we might as well leave the ship. in fact, he shoved us off, on top the dead and the wounded. we went just right over to the island just a short distance. there was a runway out there and they had an underground place. betook the wounded into it. i think they wer

under orders not to respond to provocations but they only moved in once they realized that the the projectiles bottles rocks and the like they were being thrown and towards them were actually also heading towards passes by we saw food the protests further demonstrations on monday on the day of the inauguration around three hundred people have been detained in various sites across the city and the opposition leaders have said that they will continue holding means type of demonstrations in plan to do that throughout choose day well let me have putin and no grated as president for the stood time the expectations that will be on him and what people expect to achieve to achieve over the over the six years of this to as now looked us by my colleague and he said no way. he's back for an unprecedented third term after a break as prime minister and many say russia will need to see putin two point zero any data who's been in power for five six seven years in a difficult position because people get used to him and the taken for granted he has to then reinvent himself putin has made the promise i had of t

they weighed 105 pounds, i'm not sure, and they were sewn in raw silk, and they used four for each projectile, so they had a lot of those suckers down there. we had a lot of big heavy batteries in the lower part of the gun mount to try and elevate it in case we lost current, and when the salt water hit them, well, the chlorine gas started coming up, and so we had to leave the turret, and we went out a hatch on the rear of the turret and got on the quarter deck. you could see chunks of teakwood going on where the strafing was going on, and we felt one bomb in the turret. a bomb went on the sloping side of the armor and then went out to the side. and when we come out, john anderson and i went out together. he was slekd class bothman mate and i was seaman first, and he had a twin brother that was up on the five-inch gun. we went to try to get him, but it was all on fire and couldn't do it. they brought the barge up to the front of the ship and the lieutenant commander's damage control, i don't remember his name, but he told us we might as well leave the ship. in fact, he showed us off on top of

social media of fueling the tactics websites tell and a kiss what to bring to protest slingshots projectiles molotov cocktails and bright lights to use against police also cellphone and money for the subway section out to dress in black with a mask from head to toe and finding on the internet and artest by dick on twitter transmits in real time with twitter >> will show you a lot of people basically use twitter >> history of attracting protest and often by last summer 1999 battle in seattle social media hardly a factor still 600 people arrested fast-forward toronto 2010 using social media police and average protester it worked and it may day 20122 weeks ago seattle targeted again broken windows shattered glass under siege mobilize fast and dispersed faster these days chicago preparing for a showdown twitter >> not worried could happen but not very likely. >> important to know and a kiss of pilot approach small percentage of protesters. should not be underestimated they are visible and vocal and violent. >> protests are wrapping up chicagoans who work downtown already dealing with changes to

and projectiles could be thrown. unfortunately i haven't seen that in new use any i haven't seen id or anything any sort of explosive at any occupy protest in oakland so not sure why they needed it yesterday so interesting it must be and must be the county because it says sheriff on the outside a you say urban warfare that's what these tanks are used for just really interesting just really interesting because if you think about you know people coming out of a baseball game after you know a tough loss sometimes people get a lot more rowdy than they got yesterday and yet this is with this type of stuff we're seeing what do you think this needs. from what i saw with the types of weaponry and types of defense mechanisms the police had yesterday in addition to the tactics that they used targeting individuals and snatching individuals out of crowds a situation that frankly terrifies a lot of people who may have had nothing to do with any sort of lawless act they're trying to instill fear in and convince people that it's no

not the energy they had when they were projectiles in some war or something. so just as those cannonballs don't-- are not dangerous anymore, the alpha particles and the beta particles that make up helium gas in a balloon is not dangerous. they've lost their energy. this piece of chalk isn't dangerous. but if i put this piece of chalk in a shotgun and fired at you, then it is. and that's the difference between the particles that were rejected from nuclei. they come at very, very high speeds. high speeds and a lot of energy. they can tear in to you and maybe that's not so good. but once stopped, they're completely harmless. any questions at this point? let's continue. begs the question, why is it that atoms are radioactive anyway? and it turns out all the atoms beyond atomic number 83, they're all radioactive, which is to say they're unstable. they decay. what's going on? remember we talked about the fundamental rule of electricity and that fundamental rule was that light charges repel and unlike charges attract? let's consider a proton here. and now another pro

by 8:30 last night only 300 remained, several threw paint and projectiles at officers. one police car was burned another damaged. vandalism was also reported at several oakland banks. terry mcsweeney is surveying the damage and will join more at 5:30. >>> thousands of nurses who work at eight bay area sutter hospitals plan to end a one-day strike at 7:00 this morning but won't be allowed to go back to work until sunday. 4500 nurses walked out to protest cuts in staffing, health benefits and sick days. sutter brought in replacement nurses on five-day contracts to keep the hospitals running that means the striking nurses will be locked out until sunday. stay with abc7 news for the latest on the aftermath of all the may day protests we'll bring developments as they happen during the newscast. you can get updates any time of the day at abc7news.com. >>> new word that the effort to recall oakland mayor quan is fading, according to the tribune, the group trying to oust her is short on cash, volunteers and signatures as they try put a recall vote on the november ballot. recent

it makes it possible to determine the path of a projectile under gravity and subject to resistance. ray also closed another unsolved math problem first posed in the 19th century. an indian-born teenager who learned calculus at 6 says his school boy curiosity led him to those discoveries. >>> an irish exchange student is found sthang strang elled in a japan hotel room. two american men are detained. we'll go live for it details on this murder mystery. are you still sleeping? just wanted to check and make sure that we were on schedule. the first technology of its kind... mom and dad, i have great news. is now providing answers families need. siemens. answers. [ thunk ] sweet! [ male announcer ] the solid thunk of the door on the jetta. thanks, mister! [ meow ] [ male announcer ] another example of volkswagen quality. that's the power of german engineering. right now lease the 2012 jetta for $159 a month. your doctor will say get smart about your weight. i tried weight loss plans... but their shakes aren't always made for people with diabetes. that's why there's glucerna hunger smart s

, that you cannot bring on your person, hammers, wrenches, fire accelerants, spray paint, paint projectileslarge, heavy sticks, and those big metal shields. >> with the shields, i don't see why we shouldn't be allowed to have them. the police are throwing things at us. they are shooting, you know, what they call nonlethal rounds. >> a lot stems from the occupy protest. the safety committee approves the measure, the full city council would vote on it next month. >>> most parents would do just about anything to keep their kids safe but in our electronic world there's crime against kids you may not even have heard about. >> one of our lead investigators joins us now with a preview of this story. steven? >> reporter: raj, jessica, it's a crime against children that many do not catch rate away and it can affect your kids' lives decades later. >> i was afraid that when i grew up, i wouldn't be able to get it back. >> reporter: she's talking about her identity. a frightening thought for a 10-year-old. >> it's not me. it's someone pretending to be me. >> reporter: and riley isn't the only one. carn

left an iraq war veteran with a skull fracture after he was reportedly hit with a police projecti projectile. >> i'm always concerned because they have proven time and time again they will use violence as the first resort. >> reporter: but the city is putting a positive spin on the report noting the monitors that the hopeful the chief and his team will lead the department in a new direction. the assistant police chief says the department has tried to learn from the past as this plan for tomorrow. >> we take a look at what we could have done better, what we could have done differently, and i'm very confident that in terms of how we planned, trained, and prepared for what will unfold tomorrow that it will be hopefully an uneventful day. >> reporter: we are back here live. you can see some demonstrators brought out their shields, also some sleeping bags out here, perhaps signs of what is ahead. there are some demonstrators tried to make trying to pitch those tents once again. police say they are determined to keep things peaceful. they have a lot of training internally and with outside agencies

a loose one coming off in traffic could become a dangerous projectile but the inspection goes beyond the exterior. even the engine is examined. the gas cap is also removed to check the fuel but the closest inspection is for the operator. >> initial contact with the driver, ask for his paperwork, registration, medical card, driver's license, anything about the bill of laiding, what might be associated with the load the vehicle is carrying. any hazardous materials. >> a couple times a year we do massive truck inspections to send an important message out there to the commercial drivers that, hey, keep your truck safe and in good operating condition if you're going to be driving on fairfax county roadways. >> police say they had to detain one driver because he was drinking. >>> for the second day in a row an american eagle flight at chicago o'hare had to make an emergency landing. the flight to tulsa had just taken off when an indicator light went on stating there was a mechanical problem. the pilot turned the plane around, landed at o'hare, but zidlickied off the runway and into the gra

the police got into position, looks like they were getting ready to fire some sort of projectile or somethingrotester but i didn't see them fire anything and they left after they collected about i would say four to five metal pipes that fell on the ground. they collected them as evidence and moved away from the scene. there's still a lot of police officers out here. prior to that we saw a protester i can't tell if it's the same man or not from the roof of the occupied building throwing a number of bricks down and it struck a fellow protester that was on the ground across the street. i saw that person bleeding. other protesters moved him away from the scene and that's what you've been seeing out here. >> all right, thank you very much amber lee. right at 888 turk street where someone has been throwing things off of the roof of the building there. we have both amber and christien kafton on the scene. we're going to keep you updated on this story that seems to develop by the moment. this has been a very evidentful day. just a couple of hours ago, ferries returned to service just in time for the

the path of the projectile did sht exit out his body. it did penetrate his heart.hest blood specimen. they found traces of thc, which is going to get a lot of talk and we were talking earlier about injuries to trayvon martin's hands, could he have been in some sort of fight as george zimmerman maintains. there was a quarter inch, not all his hands are bruised, and you are just looking at the photograph of the actual gun that george zimmerman used to fire the fatal shot on february 26 thath killed trayvon martin, he says when he was attacked by trayvon martin and martin's family refutes that greatly. you continue to go through that information. we'll stay in close touch with you. thanks for that information. >> the estranged wife of robert kennedy, jr., killed herself. it is another painful loss for a family that's been touched by tragedy generation after generation. let's bring in cnn's alina cho. >> by all accounts mary kennedy was deeply depressed and struggled with prescription drugs and alcohol and had a very public and very ugly falling out with her husband ro

. >> manufactured in england, the arwin gun shoots rubber projectile bullets and has been used by the've used it quite a bit when i was a sergeant and working patrol, where we would have suspects, as an example, armed with a knife where sometimes we were, you know, in the old days we were faced with nothing -- no other options but deadly force. utilizing the arwin, it's a very effective round. it will take you right down to your knees. it's like an 80-mile-per-hour hardball being delivered to your chest or your diaphragm or your legs. >> just recently added to the sheriff's arsenal of less than lethal weapons is the stun gun or taser. >> these have just been issued to us as of a couple of weeks ago, and which they are a new taser gun. it delivers a very powerful jolt of electricity. >> the effect of the taser momentarily paralyzes potentially violent inmates long enough for deputies to control them, as seen in this surveillance video. as part of the training to use the new gun, all supervising officers had to be stunned with the taser. >> a five-second burst. and i've got to tell you,