A student at the top of a building of height h throws ball A straight upward with speed v0 and throws ball B straight downward with the same initial speed. Part A Compare the ball's accelerations, both direction and magnitude, immediately after they leave her hand. Is one acceleration larger than the other? Or are the magnitudes equal?

Accelerations are equal in both cases.

Explanation:

No matter the initial speed you are able to put in to any balls, acceleration in this case (free falling) is always equal, because is the gravity which accelerate in this model of study, and gravity is always the same. The cases that gravity could not be the same, it's the case when you are to far from Earth surface.