Answered

Which of the following has no acceleration

AA satellite orbiting at a constant speed.
BA person running once around a track at a constant speed
CA car making a turn at a constant speed
DA person running 100 m straight across a field at a constant speed

Verified Answer :

the answer is D. Acceleration does not depend only in change in speed but also change in direction. Answers A,B and C all involve change in direction of the body. therefore they are accelerating. in D the person is running in straight line at constant speed, so no change in direction and no change in speed.

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