Question

A nonzero net force acts on a moving ball, and the ball comes to a stop. Which statement is correct about the relationship between the net force and the ball's movement?(1 point)
Responses

The net force causes a decrease in acceleration because without the force the ball's velocity would remain the same.
The net force causes a decrease in acceleration because without the force the ball's velocity would remain the same.

An increase in acceleration causes the net force to be nonzero because causation works in both directions.
An increase in acceleration causes the net force to be nonzero because causation works in both directions.

The net force causes an increase in acceleration because without the force the ball's velocity would remain the same.
The net force causes an increase in acceleration because without the force the ball's velocity would remain the same.

A decrease in acceleration causes the net force to be nonzero because causation works in both directions.
A decrease in acceleration causes the net force to be nonzero because causation works in both directions.

Answer 1

"The net force causes an increase in acceleration because without the force the ball's velocity would remain the same."

Reason: By Newton's 2nd law, a nonzero net force produces acceleration (change in velocity). In this case the net force is opposite the motion, so it produces an acceleration that reduces the speed (a "deceleration"). The cause is the net force, not the reverse.