WAEC Physics 2023 Objective — Question 42
Question 42 of 50 from the West African Examinations Council (WAEC) Physics 2023 Objective paper, with the correct answer and a full explanation.
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A car, P, with a velocity of 30 ms⁻¹ is travelling in the same direction as a car, Q, with a velocity of 20 ms⁻¹. The velocity of P relative to Q is
- A. 50 ms⁻¹
- B. 45 ms⁻¹
- C. 20 ms⁻¹
- D. 10 ms⁻¹Correct
Explanation
Relative velocity of P with respect to Q = Vp - Vq = 30-20 = 10 ms⁻¹.
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