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A boy holds a hydrogen-filled balloon wi...

A boy holds a hydrogen-filled balloon with a string. He is sitting in a train moving with uniform velocity on a straight track. The string is vertical. On applying brakes, the balloon will

A

be thrown forward

B

be thrown backward

C

remain vertical

D

fall downwards

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TARGET PUBLICATION-LAWS OF MOTION-EXERCISE
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  13. Inertial frame of reference implies that

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  14. A frame of reference which moves with constant velocity with reference...

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  15. A frame of reference in which Newton's law of inertia does not hold go...

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  16. Non-inertial frame of reference have

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