Choose the force diagram (freebody diagram) that best represents the forces acting on the ball. the effects of air resistance are negligible. a ball thrown upward into the air at the top of its flight

Diagram A

Explanation:

Since air resistance is to be neglected, only the gravitational force acts on the ball (and has acted all the way from the throw upward). Diagram A reflects this fact correctly indicating the gravity acting on the ball downward.

you would expect a sound wave to speed up. - b)

it is a negative acceleration