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A trolley filled with sand moves on a sm...

A trolley filled with sand moves on a smooth horizontal surface with an initial velocity v. A small hole is there at the base of trolley, from which sand is leaking out at constant rate. As the sand leaks out

A

The velocity of the trolley increases.

B

The velocity of the trolley remains unchanged.

C

The momentum of the trolley is conserved

D

The momentum of the total system (trolley + leaked sand ) conserved.

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The correct Answer is:
B
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