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WAEC Further Mathematics 2012 Question 39

Question 39

Dynamics

The distance s in metre covered by a particle in t seconds is s = 3/2 t2 − 3t. Find its acceleration.

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

Answer: C (3ms−2)

Explanation

v = ds/dt = 3t − 3 and a = dv/dt = 3 ms−2.