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OpenStudy (anonymous):
a shell of mass o.020 kg is fired by gun of 100kg the muzzle speed of the shell is 10 m/s what is the recoil of speed of gun
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OpenStudy (anonymous):
by the law of conservation of momentum, we have m1*v1=m2*v2 or, 0.020*10=100*v2 or, v2=0.002m/s Thus, the recoil speed of gun is 0.002m/s.
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