54) A boy of mass 50 kg running at 5 m/s jumps on to a 20 kg trolley travelling in the same direction at 15 m/s. What is their common velocity?

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54) A boy of mass 50 kg running
at 5 m/s jumps on to a 20 kg
trolley travelling in the same
direction at 1.5 m/s. What is their
common velocity?
Transcribed Image Text:54) A boy of mass 50 kg running at 5 m/s jumps on to a 20 kg trolley travelling in the same direction at 1.5 m/s. What is their common velocity?
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