A boy of mass 60 kg running at 3m/s jumps on a trolly of mass 140 kg moving with velocity of 1.5m/s in the same direction
Find their common velocity
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according to conservation of momentum,
m1v1+m2v2=(m1+m2)v
60×3+140×1.5=200v
v=1.65m/s
m1v1+m2v2=(m1+m2)v
60×3+140×1.5=200v
v=1.65m/s
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