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water bottle cannon

water bottle cannon
You will be able to hit people just with a water bottle cap! If you do it right it can kind of hurt. Sorry but I dont have a camera, and I dont have enough money to buy a camera. Infact I dont have my own car.
 
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Step 1Basics

basics
You can take a 1pt,0.9 fl oz bottle, and be able to hit someone with the cap because of pressure build up. You should use a dry bottle, but you can ad water in it and it will be more powerful.
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16 comments
Sep 2, 2007. 12:43 PMoinkoinkzoopals says:
if you want to pack more of a punch use vinegar and baking soda instead of twisting the bottle
Aug 12, 2008. 12:27 PMEnigmaMax says:
I tried that but... this way is better.
Sep 14, 2008. 7:00 AMoinkoinkzoopals says:
ru serios? the viniger and baking soda produces 4x the airpressure and 4x the velocity
Sep 14, 2008. 10:49 AMEnigmaMax says:
well, It took me a while to manage getting the baking soda in the bottle in time because the reaction happens so quickly. it is stronger, but very dangerous, because you risk the bottle exploding in your hands. small correction, velocity is just speed given with a direction. ex) 35 mph. north.
May 28, 2009. 1:05 PMFather Christmas says:
Big Correction:

A Vector is magnitude(in this case, velocity) with direction. A Scalor is magnitude without. Velocity is Distance per Time unit. Meters per second. Miles Per Hour. Velocities do not always have direction.
May 28, 2009. 6:10 PMEnigmaMax says:
I'm sure OinkOinkzoopals was trying to describe the speed of the bottle cap, not the magnitude of the blast. Or maybe he/she was, I can't be certain.

oh, and you're wrong. velocity requires direction as well as speed. http://en.wikipedia.org/wiki/Velocity
May 29, 2009. 3:42 AMFather Christmas says:
oh well, i was wrong. there is a reason i failed physics. but, the bottle cap would still have direction. So velocity was still correct.
May 30, 2009. 2:34 PMEnigmaMax says:
yes... well, in my experience, velocity was always a optional thing. The only reason I corrected OinkOinkzoopals is because he should have said 4X the speed, not 4X the velocity, because that made him sound stupid.
May 30, 2009. 3:07 PMFather Christmas says:
I have to admit, velocity doesn't sound quite right.
Aug 30, 2007. 10:21 AMnoahw says:
(removed by author or community request)
Aug 30, 2007. 12:20 PMnoahw says:
(removed by author or community request)
Aug 30, 2007. 1:02 PMnoahw says:
Sweet!

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