Question

A child tosses a ball straight upward. She says the ball is moving away from her hand because the ball feels an upward "force of the throw" as well as the force of gravity. After the ball leaves her hand. Is the net force on the ball zero as it moves upward? {Neglect air resistance}YESNO

Answer 1

As the ball leaves the hand, the velocity of the ball while moving in the upward direction is decreasing.

Thus, the change in velocity that that that takes place with respect tnon-zeros

non-zero.

Thus, the acceleration of the ball moving upward is non-zero.

According to newton's second law, the net force acting on the ball is,

`F_{\text{net}}=ma`

where m is the mass of the ball,

As the mass of the ball and acceleration of the ball is non-zero, thus, the net force acting on the ball moving upward is non-zero.

Hence, the given statement of zero net force is incorrect and no is the correct answer.

Thus, the acceleration of the