WAEC Physics 2017 Objective — Question 13
Question 13 of 50 from the West African Examinations Council (WAEC) Physics 2017 Objective paper, with the correct answer and a full explanation.
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A moving body of mass 25.0kg undergoes a uniform retardation of 20.0 ms⁻². Calculate the magnitude of the retarding force.
- A. A. 1.25 N
- B. B. 8.00 N
- C. C. 45.00 N
- D. D. 500.00 NCorrect
Explanation
Magnitude of retarding force = [mass of the moving body] x [retardation] = 25 x 20 = 500N.
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