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Q.23 A ball after falling a distance of 5 metre fromrest hits elastically the floor of a lift and.rebounds. At the time of impact the lift wasmoving up with a velocity of 1m/sec. Thevelocity with which the ball rebounds just afterimpact is(g 10m/sec)(A) 10 m/sec.(C) 12 m/sec(B) 11m/sec.(D) 13 m/sec |
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Answer» thanku |
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