WAEC Physics 2018 Objective — Question 5
Question 5 of 50 from the West African Examinations Council (WAEC) Physics 2018 Objective paper, with the correct answer and a full explanation.
Advertisement
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 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?
- A. I and III only
- B. I and II only
- C. II and III only
- D. I, II and IIICorrect
Explanation
All three conditions required for SHM (fixed centre, restoring force towards centre, acceleration proportional to displacement) are violated for the ball's motion, so I, II and III are all correct.
Advertisement
Sign up free to unlock
- Score tracking
- Practice history
- Saved questions
- Progress dashboard
- Personalized sessions
- Weak-topic breakdown
…and/or go further with premium services and No Ads.