WAEC Physics 2024 Objective — Question 6

Question 6 of 50 from the West African Examinations Council (WAEC) Physics 2024 Objective paper, with the correct answer and a full explanation.

6. (The diagram above illustrates the motion of a cyclist from P to R.) The distance travelled is determined by the A.

A. area under QR.
B. area under PQR.Correct
C. gradient of PQR.
D. gradient of QR.

Explanation

The distance travelled equals the area under the velocity-time graph. Here, the area is 1/2(a+b)h where a and b represent the length of the two parallel sides, and h the height. NB: the gradient of region QR represents the deceleration/retardation.

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