The descriptions of the ball's motion during a game of bowling can be evaluated as follows:
A) The ball is accelerated while it is pushed by the student's hand due to an unbalanced force.
- This statement is True. When the student's hand pushes the ball, it exerts an unbalanced force on it, causing the ball to accelerate.
B) The ball slows down as it rolls because friction exerts an unbalanced force.
- This statement is True. As the ball rolls, friction between the ball and the lane acts as an unbalanced force, causing it to slow down.
C) The ball is accelerated while it is held in the student's hand due to balanced forces.
- This statement is False. When the ball is held in the student's hand, it is not accelerating; the forces (gravity and the hand's support) are balanced.
D) The ball does not change its motion as it rolls because of the balanced force provided by friction.
- This statement is False. The ball does change its motion (slowing down) due to the unbalanced force of friction acting on it.
E) The ball does not change its motion while it is held in the student's hand due to balanced forces.
- This statement is True. While held in the hand, the forces acting on the ball are balanced, so there is no change in motion.
So, the correct answers describing the ball's motion are A, B, and E.