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Q.

A body falls from a height of 100 m. After 2 sec, if the gravity disappears, it strikes the ground after

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a

3 s

b

4 s

c

5 s

d

6 s

answer is B.

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Detailed Solution

In 2 sec. distance travelled =12×10×4=20mVelocity after 2 sec = gt = 20 m/s.Time taken to travel remaining 80 m, 8020=4sec
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