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A child is standing at one end of a long...

A child is standing at one end of a long trolley moving with a speed v on a smooth horizontal track. If the child starts running towards the other end of the trolley with a speed u, the centre of mass of the system (trolley + child) will move with a speed :

A

zero

B

(v +u)

C

(v - u)

D

v

Text Solution

Verified by Experts

The correct Answer is:
D
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