A student rolled a red basketball across a gym floor toward a blue basketball, which was motionless. When the balls collided, the student observed that the red basketball had stopped moving and concluded that the blue basketball had exerted a force on the red ball. Evaluate the student’s conclusion by answering the following questions.
• What force acted on the red ball during the collision?
• Compare the forces that acted on the two balls during the collision.
• Given that the red basketball stopped moving, predict the motion of the blue basketball after the collision.
• Was the student’s conclusion correct?
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