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A balloon has 5 g of air. A small hole i...

A balloon has 5 g of air. A small hole is pierced into it. The air escapes at a uniform rate with a velocity of 4 cm/s. If the balloon shrinks completely in 2.5 s, then the average force acting on the balloon is

A

2 dyne

B

2 N

C

8 dyne

D

8 N

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TARGET PUBLICATION-LAWS OF MOTION-EXERCISE
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  2. A man weighing 60 kg is in a lift moving down with an acceleration of ...

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