Physics
posted by Leasha on .
A ball is thrown straight up into the air with a velocity of +20.5 m/s. Find the velocity of the ball after 2.5 s.

v = Vi  g t
v = 20.5  9.8 (2.5)
v = 20.5  24.5 = 4.0
Of course if it started at the ground, the final velocity is zero because it hit the ground :)