Question

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

A.
5.1 meters
B.
9.8 meters
C.
25 meters
D.
15 meters

Answer 1

15m

Step-by-step explanation:

vi = 0

vf = 10

a = -9.8

10^2 = 0 + 2(-9.8)(x2-x1) = -5.1

20-5.1 = 14.9m = 15m