Question

A ball is dropped from a height of 20 meters. At what helght does the ball have a velocity of 10 meters/second?

Answer 1

5.10 meters.

Step-by-step explanation:

v²=u²+2gh

or, (10)²=(0)²+2×9.8×h

or, 19.6h=100

or, h=5.10 meters

Hope, this helps you.