how much work is needed to be done on a ball of mass 50 gram to give it a momentum of 500 g cm s^-1. ?
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work done by all the forces=change in kinetic energy
W=ΔKE
m=50gm=0.05kg
P=500gcm^-1
we know that or we should know that
KE=P²/2m
ΔKE=W=ΔP²/2m
=500²/2*50
=5000/2
=2500g cm^-1
hope this helps
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