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a) the time taken for the stone to strike the ground.
Since both free fall and horizontal projection take the same duration;
h=½gt2
30=½*2*t2
t=6½ =
b) the velocity at which the stone strikes the ground.
u=0 (for free fall).
Therefore, v=(2gh)½ =(2*2*30)½
=
Moraa orina answered the question on April 8, 2018 at 16:59
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