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WAEC Further Mathematics 2006 Question 28

Question 28

Dynamics

A force of 32 Newtons is applied to an object of mass m kg which is at rest on a smooth horizontal surface. If the acceleration produced is 8ms−2, find the value of m

  1. A.16
  2. B.12
  3. C.6
  4. D.4
Show the answer and explanation

Answer: D (4)

Explanation

F = ma, so 32 = 8m and m = 4 kg.