if the momentum of an abject of mass 20kg is 50 kgm/s find its k.E.
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momentum =mass*velocity
so velocity is momentum /mass
so the velocity is 50/20=2.5m/s
ke=1/2*mass*velocity squared
->1/2*20*2.5*2.5
so ke=3.125J
so velocity is momentum /mass
so the velocity is 50/20=2.5m/s
ke=1/2*mass*velocity squared
->1/2*20*2.5*2.5
so ke=3.125J
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