?? I am trying to enter a contest, but I am trying to think of something smart. Things that follow laws, like "equal and opposite reaction" where some guy is bumping into two other guys.. stuff like that. what should i do?
2006-10-20 14:07:47 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Physics
If you can take a time lapse photo, throw a ball into the air on a dark background. Its path will be a near perfect parabola. Even better, throw something long with an uneven weight distribution that will spin, like a juggling club or a mallet. It'll look like it's spinning crazily and it'll trace a fancy path but the centre of gravity will still follow a parabola.
Shows how objects move under constant force.
2006-10-20 14:14:10 · answer #1 · answered by dm_cork 3 · 1⤊ 0⤋
get a drinking glass made of glass, a spoon, a fork, a toothpick, and some matches. Put the spoon end into the tines of the fork so they stay together, handles away from each other. Put the toothpick between the tines of the fork near the spoon. Then balance the assembley on the lip of the glass. so that the handles kind of wrap around the glass. A small portion of the toothpick will stay inside the rim of the glass. It takes a little doing but will balance. Then burn off the part of the toothpick inside the glass. The fire will extinquish right on the lip and nothing will be inside the glass. The center of gravity will be right at the balance point on the rim. Looks weird.
2006-10-20 21:46:21 · answer #2 · answered by RobertB 5 · 0⤊ 0⤋
If you can get a strobe light, toss a ball into the air and take a long exposure photograph. The picture will show the ball at lots of different positions. Measure the distance between each ball position. Using the known time delay between flashes for the strobe light, you will be able to show that the speed is constant in the horizontal direction, and that the ball is accelerated at 9.8 m/s^2 in the vertical direction. This is a proof of fundamental kinematics concepts, is fun to do, and makes some cool looking pictures. Good luck.
2006-10-20 22:10:10 · answer #3 · answered by bandl84 3 · 0⤊ 0⤋
Easy! Get one of of those toy / stress reliever things, you know, the 5 balls that are suspended on lines and hang next to each other? When you lift one end up and let it go, all of them stay put except the one on the opposite end.
Take a high speed photo session of this in work, if you can, showing the equal and opposite reaction :)
2006-10-20 21:10:48 · answer #4 · answered by iswd1 5 · 0⤊ 0⤋
Get a large tin container, such as one used for maple syrup. it needs to have fairly weak walls, nothing too strong. tin is good because its flimsy.
Put a small amount of water in it, maybe half a cup or so. Heat this container, with the lid OFF, over a flame, until steam is coming out.
once steam is coming out, cap it, and spray the container with water mist. Water mist from a spray bottle. This will cool the air inside reducing the pressure, crushing the tin.
So you can have a picture of a container being crushed by a water mister.
2006-10-20 21:50:32 · answer #5 · answered by Answer guy 2 · 0⤊ 0⤋
Easy. Take a picture of me on my couch watching football. An object at rest tends to stay at rest.
2006-10-20 21:17:18 · answer #6 · answered by David C 2 · 2⤊ 0⤋
If you can use video with sound, you can illistrate the doppler effect by letting a train, plane or car go past you while recording the sound.
2006-10-20 21:17:34 · answer #7 · answered by Big hands Big feet 7 · 0⤊ 0⤋
roller coaster or have ur friend sit on a chair and shoot a fire estinguisher the other way so the (rolling) chair moves with him while the estinguisher shoots the other way
wat contest? i wanna enter!
2006-10-20 21:09:45 · answer #8 · answered by dover_luv 3 · 0⤊ 0⤋
An ice skater spinning faster when she brings her leg closer to her body--conservation of angular momentum.
2006-10-20 21:39:33 · answer #9 · answered by jg 2 · 1⤊ 0⤋
What goes up, must come down.
2006-10-20 21:15:51 · answer #10 · answered by jedi_junkie05 3 · 0⤊ 0⤋