You throw a baseball straight up in the air so that it rises to a maximum height much greater than your?

Question

height. Is the magnitude of the acceleration greater while it is being thrown or after it leave your hand? Explain.

Answer 1

While it is being thrown.
It cannot accelerate upward after it leaves your hand, because there's no longer any force being applied.

However, gravity is always accelerating the ball downward, even while it's in your hand. But that value never changes, unless you throw the ball really, REALLY high. :-]

Answer 2

It depends on your assumption of how it is thrown.
if u assume the acceleration is uniform while in contact with your hand. I guess that the magnitude of the acceleration is greater while it is being thrown. Acceleration is dv/dt. When I throw a ball straight up, velocity goes from 0 to Vmax in less than a second. When the ball leaves my hand, it takes more than a second for the velocity to reach zero then fall back to the ground.