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Q.

A 50kg box sledge is travelling horizontally on ice at a speed of 9 ms–1. A 100 kg packet is dropped on it vertically. The subsequent velocity of the sledge is

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a

1 ms–1

b

2 ms–1

c

4 ms–1

d

3 ms–1

answer is D.

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Detailed Solution

V=m1u1m1+m2=50×9150=3 ms−1
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