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Question

If a ball is dropped from a height of 40 m and bounce back upto 60% of the orginal height, then total distance travelled (in m) by the ball before coming to rest is 


Solution

The distance travelled by the ball is
S=40+2×[40(0.6)+40(0.6)2+]S=40[1+2×(0.610.6)]S=160 m

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