True of False?: A. When a moving object changes it\'s direction of motion there

Question

True of False?:

A. When a moving object changes it's direction of motion there is always a change in it's centripetal acceleration

B. When an object is fixed at the edge of a turntable rotating at constant angular velocity in a counter-clockwise direction, it's centripetal acceleration is continuously changing its direction

C. A student is positioned at a point 5 meters from the center of a wheel of radius 20 meters, turning at a rate of 2 radians per minute in a counter-clockwise direction. the student then moves to a point on the circumference of thew wheel. when the student reaches the circumference of the wheel, the angular velocity of the wheel is halved to 1 radian per minute in a counter-clockwise direction. the centripetal acceleration sensed by the student at the circumference is the same as it was when the student was at the point 5 meters from the center of the shell.

D. the direction of the tangential acceleration when the angular velocity is decreasing is parallel to the direction of the centripetal acceleration

Explanation / Answer

A. True B. False

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