posted by Vanessa .
A tennis ball is thrown vertically upward with an initial velocity of +7.0 m/s.
What will the ball’s velocity be when it returns to its starting point? The acceleration of gravity is 9.81 m/s^2.
Answer in units of m/s
+7.0 m/s. Throwing something is always parabolic; when the ball reaches the distance it began at (remember, it peaks at velocity = 0 m/s) it has the original velocity.