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![[Post New]](/templates/default/images/icon_minipost_new.gif) 16 Jul 2007 20:28:33 IST
Accepted Answer [?]
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last t secs of its ascent means that last t secs of its going upward
so final velo = 0
accn = -g
time = t
initial velo = v -(- gt) = gt
s = (gt)t - 1/2gt^2
=1/2g^2
hence ans is (c)
rate if this helps u...
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this reply: 12 points
(with 2 
in 3 votes ) [?]
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