velocity of body of mass 10 kg increases from 4 metre per second to 8 metre per second when a force acts on it for 2 seconds what is a Momentum before and after the four sets what is the gain and the momentum for second what is the value of the force
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Explanation:
m=10kg
v1=4m/s
v2=8m/s
momentum before the act =mv1=10.4=40kgm/s
momentum after the act =10.8=80 kg m/s
gain in momentum per second =80-40=40kg m/s
force=m.(v2-v1)/t=10.40/2=400/2=200N
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