Question

if a ball that is 4 meters above the ground is thrown horizontally at 4 meters per second how long will it take for the ball to hit the ground?

Answer 1

Explanation:

see to answer questions like this we first need to acknowledge that to hit the ground the horizontal speed does not matter. only the vertical speed does.

now to find the final time we can use

s=ut + 1/2at²

4=0×t +1/2×10×t²

4=5t²

t= √4/5 seconds =√0.8 seconds