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WAEC Further Mathematics 2025 Objective — Question 25

Question 25 of 40 from the West African Examinations Council (WAEC) Further Mathematics 2025 Objective paper, with the correct answer and a full explanation.

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The distance S in metres covered by a particle in t seconds is S = 7/2 t² + 5t + 18. Find the acceleration of the particle.

  • A. 14 ms⁻²
  • B. 13 ms⁻²
  • C. 10 ms⁻²
  • D. 7 ms⁻²Correct

Explanation

v = ds/dt = 7t+5. Acceleration a = dv/dt = 7 ms⁻² (constant).

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