Explain why they feel weightless. If you are in freefall with only the force of gravity acting on you, then you feel weightless. Back to Ch. 2 questions. An object travels in a circular path at a constant speed. Hint Remember that there is an acceleration whenever there is a change in velocity.
Velocity depends on direction.
Back to Ch. 3 questions. The centripetal acceleration is directly proportional to the square of the velocity. The centripetal acceleration is inversely proportional to the radius of the circle. This means that halving the radius doubles the crntripetal acceleration. Back to Ch. 3 questions.