You lift a bowling ball with your hand, accelerating it upward. what are the forces on the ball and on what objects are they exerted?

Explanation:

When we lift a ball with the hand the forces experienced by the ball is  

Resultant of these forces gives acceleration to the ball

While your hand exerts a force on the ball, the ball will also exert a force of equal magnitude but opposite in direction to the force by hand.

All these forces is exerted on the ball, hand or on the earth.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more