passwella.
Menu

WAEC Further Mathematics 2011 Question 34

Question 34

Dynamics

A body of mass 25kg changes its speed from 15ms−1 to 35ms−1 in 5 seconds by the action of an applied force F. Find the value of F.

  1. A.100 N
  2. B.375 N
  3. C.500N
  4. D.600 N
Show the answer and explanation

Answer: A (100 N)

Explanation

F = m(v − u)/t = 25 × (35 − 15)/5 = 25 × 4 = 100 N.