WAEC Physics 2016 Objective — Question 8
Question 8 of 50 from the West African Examinations Council (WAEC) Physics 2016 Objective paper, with the correct answer and a full explanation.
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8. The two positions of a body undergoing a uniformly accelerated motion are (10s, 10 ms⁻¹) and (30s, 50 ms⁻¹) on the velocity-time graph. Calculate the magnitude of the acceleration of the body. A. 0.5 ms⁻² B. 2.0 ms⁻² C. 10.0 ms⁻² D. 40.0 ms⁻²
- A. 0.5 ms⁻²
- B. 2.0 ms⁻²Correct
- C. 10.0 ms⁻²
- D. 40.0 ms⁻²
Explanation
Acceleration = Δv/Δt = (50-10)/(30-10) = 40/20 = 2 ms⁻².
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