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A ball hangs from a string inside a rail...

A ball hangs from a string inside a rail road car moving along a straight track. The string is observed to be inclined towards the rear of the car making a constant small angle with the vertical. It shows that the car is

A

moving with a uniform acceleration

B

moving with a uniform velocity

C

moving with a uniform retardation

D

moving with an acceleration which is increasing uniformly

Text Solution

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The correct Answer is:
A
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