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Question

# A train travels at 60 m/s to the east with respect to the ground. A businessman on the train runs at 5 m/s to the west with respect to the train. Find the velocity of the man with respect to the ground.

A
5 m/s
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B
55 m/s
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C
60 m/s
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D
65 m/s
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Solution

## The correct option is B 55 m/s Assuming east as the positive direction. Velocity of the train with respect to the ground (vT=60 m/s) Velocity of the man with respect to the train (vMT=−5 m/s) Let the velocity of the man with respect to the ground =vM vMT=vM−vT⇒vM=vMT+vT⇒vM=−5+60=55 m/s

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