i) v2 = u2 - 2as
but v = 0
u2 = 2gs = 2 x 10 x 100 = 2000 m/s,
u = √2000=44.72m/s
ii) s = ut - 12gt2 but s = 0,
t = 2ug = 2×44.7210
= 8.944s
johnmulu answered the question on February 14, 2017 at 05:37
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