A man of 60 kg is running on the road and suddenly jumps into a stationary trolly car of mass 120 kg. Then, the trolly car starts moving with velocity 2 ms -1 . The velocity of the running man was________________ms -1 . when he jumps into the car.
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(6)
Taking the system as man and trolley and using
conservation of linear momentum.
60 x v = (60+120)x2
v = 6 m/s
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