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A stone is thrown vertically upwards and returns to the starting point at the ground in 6 sec. Find out max. height and initial velocity of stone.
1 Answer
written 3.9 years ago by |
(i)
Given:
t=6ss=0a=19.8m/s2s=ut+12at20=u×6−4.9×36∴u=29.4m/s↑
(ii)
v=0;s=Hv2=u2+2as∴0=29.42+2(−9.8)×H∴H=44.1m