# physics

a shell of mass 0.020 kg is fired by a gun of mass 100kg.if the muzzle speed of the shell is 80m/s.what is the recoil speed of the gun

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2. 👎 0
3. 👁 55
1. conserve momentum:

.02*80 = 100v

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2. 👎 0
posted by Steve

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