Question

4. What causes the rolling ball to stop when there is no one to push it con-
tinuously?
A. Forces acting on the ball are already used up.
B. The forces acting on the ball were continuously increasing.
C. Unbalanced force causes the rolling ball to change its motion.
D. Gravitational force causes the rolling ball to change its motion.​

Answer 1

Answer:

(A ) because the force applied is completed and friction made it to stop

Answer 2

(D).Gravitational force causes the rolling ball to change its motion is no one to push it continuously.

Explanation:

• Since the force of friction goes against the direction that the ball is moving. that is the force that will cause it to slow down. the force from gravity and the force from the ground only act straight up and down, so they will not affect the balls speed on a horizontal surface.
• Horizontal friction force f, and the normal reaction force, N, acting a distance S ahead of the ball.
• proportional to the product of the two masses. but inversely proportional to the square of the distance between the object.