A ball is dropped from a cliff amd has an acceleration of 9.8 meters per second squared. How long will it take the ball to reach a speed of 24.5 meters per second squared (m/s^2) ?

Answer 1

Drag out the old standby formula

s = 1/2 at²

Answer 2

Oops. we're talking velocity
v = at

Note: velocity is not measured in m/s²