0
(equal and opposite reaction)
if a gun recoil kinetic energy (ke) is same as bullet kinetic energy then :
say 0.02 kilogram slug @ 1 000 m/s the ke 0.5*m*v^2 = 10 000 joules (j)
say gun @ 1 kg then : 10 000 j = 1 * v^2 , then v = sq root 10 000 = 100 m/s
actually, last line should read:
say gun @ 1kg then : 10 000 j = (1 * v^2)/2, then v=sq root 20 000=141m/s
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∙ 12y ago
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How does a rifle demonstrate Newton's third law of motion?
When you fire a rifle,the recoil kick is introducing you to Newton's Third Law.If you you don't hold the rifle properly to absorb the recoil in your whole body, the recoil will leave a nasty bruise mark; (mv) recoil = (mv) bullet. You want to minimize the recoil velocity by maximizing the recoil mass=your rifle + your body. Getting the [proper stance and grip will raise the recoil mass the reduce the impact on your body.
Why it is difficult for a firefighter to hold hose on which eject large amount of water at high velocity?
There may be recoil from the hose.
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