Question

A projectile is fired horizontally from the top of a cliff. The projectile hits the ground 4 s later at a distance of 2 km from the base of the cliff. What is the height of the cliff?

Answer 1

Explanation:

$h = \frac{1}{2} g {t}^{2} \\ t = 4\\ g = 10 \\ h = 80m$