Question

Yafet throws a rock horizontally off a cliff in the Grand Canyon, at 35.6 m/s. The cliff has a height of 1750 m. How long will it take for the rock to reach the bottom of the cliff?

Answer 1

18.9 s

Step-by-step explanation:

Given in the y direction:

s = 1750 m

u = 0 m/s

a = 9.8 m/s²

Find: t

s = ut + ½ at²

1750 = (0) t + ½ (9.8) t²

t = 18.9

It takes 18.9 seconds for the rock to reach the bottom of the cliff.