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WAEC Further Mathematics 2017 Question 37

Question 37

Dynamics

The velocity, V, of a particle, in ms−1, after t seconds, is V = 3t2 + 2t − 1. Find the acceleration of the particle after 2 seconds.

  1. A.10 ms−2
  2. B.13 ms−2
  3. C.14 ms−2
  4. D.17 ms−2
Show the answer and explanation

Answer: C (14 ms−2)

Explanation

a = dV/dt = 6t + 2 = 14 ms⁻² at t = 2.