A ball rolls down a grassy hill and eventually comes to a stop. Select three of the reasons the ball comes to a stop.
A. Friction and drag oppose the motion of the ball.
B. There is no force acting to move the ball forward.
C. The force of friction against the ball is decreased.
D. The forces opposing the ball are unbalanced.
✔E. The force of gravity has increased and stopped the ball.
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A, B, and E are the correct reasons why the ball comes to a stop.
A. Friction and drag oppose the motion of the ball, which eventually slows it down and brings it to a stop.
B. There is no force acting to move the ball forward. When the ball reaches the bottom of the hill, the initial force that was propelling it forward (gravity) is no longer present.
E. The force of gravity has increased and stopped the ball. Gravity is the force that pulls the ball downwards, and when the ball reaches the bottom of the hill, gravity pulls it to the ground and brings it to a stop.