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\(^{-2}\))
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Chris110
3 years ago
using R=u√2h/g
we have 20=5√2h/10
squaring both side we have
(20)²=(5√2h/10)²
400=25*2h/10
400*10=25*2h
4000=50h
Divide both side we have
4000/50=h
80=h
therefore h=80m
