A ball is thrown up vertically with a velocity of49m/s calculate:1)the maximum height to which it rises. 2) the total time it takes to return to the surface of earth
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max. height= u^2/2g
= 49*49/2* 9.8=122.5m
total time=2u/g
=2*49/9.8=10 seconds
hope short trick helps
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