Question

A stone is projected horizontally from the

top of a tower with a speed of 5 m/s. It lands
on the ground level at a horizontal distance
of 20 m from the foot of the tower. Calculate
the height of the tower. (g 10 m/s²).

Answer 1

80 m tall

Step-by-step explanation:

*** EDITED *** (I left out the '1/2' in the equation....D'Oh!)

It was descending 4 seconds ...because it landed 20 m away (at 5 m/s ...so 4 seconds)

displacement = 1/2 a t^2

= 1/2 * 10 ( 4)^2 = 80 m tall