A stone is projected horizontally from the top of a tower with a speed of...
PHYSICS
WAEC 1999
A stone is projected horizontally from the top of a tower with a speed of 5ms-1. It lands on the ground level at a horizontal distance of 20m from the foot of the tower. Calculate the height of the tower. (g = 10ms\(^{-2}\))
Explanation
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H = \(\frac{1}{2} gt^2\) S = ut
t = \(\frac{5}{u} = \frac{20}{5} = 45\)
H = \(\frac{1}{2}gt^2 = \frac{1}{2} \times 10 x 4^2\)
= 80m
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