A ball rolls down from the top of a grassy hill, reaches the bottom of the hill, continues to roll, and then starts to slow down and comes to a stop. What forces caused this ball's motion?
A
Frictional force caused the ball to roll down the hill, but magnetism caused the ball to slow down and stop.
B
Magnetic force caused the ball to roll down the hill, but air resistance caused the ball to slow down and stop.
C
The force of the hill caused the ball to roll down the hill, but gravity caused the ball to slow down and stop.
D
Gravity caused the ball to roll down the hill, but frictional force caused the ball to slow down and stop.
D
Gravity caused the ball to roll down the hill, but frictional force caused the ball to slow down and stop.