WAEC Further Mathematics 2024 Objective — Question 20
Question 20 of 40 from the West African Examinations Council (WAEC) Further Mathematics 2024 Objective paper, with the correct answer and a full explanation.
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20. A particle starts from rest and accelerates at 4 ms^-2. Find the distance covered after 4 seconds.
- A. 12 m
- B. 14 m
- C. 18 m
- D. 12 m (as printed)
Explanation
u=0 m/s, a=4 m/s^2, t=4s. s=ut+(1/2)at^2 = 0(4) + (1/2)(4)(4^2) = 2(16) = 32m. This computed value (32m) does not match any of the printed options, which appear to contain a transcription inconsistency in the source paper; the WAEC key marks the answer as D.
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