Question on: WAEC Physics - 2018

During a training session, two footballers pass a ball repeatedly between each other. The 'to and fro' motion of the ball is not simple harmonic because the

I. Acceleration of the ball is not directed towards a fixed point

II. Restoring force is not directed towards the centre

III. Acceleration of the ball is not directly proportional to the displacement from a fixed point

Which of the statements above are correct?

I and III only

I and II only

II and III only

I, II and III

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Correct Option: A

In Simple Harmonic Motion, the body in motion must have acceleration in a direction opposite to the displacement and the acceleration is directly proportional to displacement and is directed towards its mean position.