JAMB Physics 1985 Question 5

Question 5

Motion

The graph in Fig. 1 above describes the motion of a particle. The acceleration of the particle during the motion is

Diagram for this question
  1. A.0.00 m s−2
  2. B.0.25 m s−2
  3. C.4.00 m s−2
  4. D.8.00 m s−2
  5. E.10.00 m s−2.
Show the answer and explanation

Answer: C (4.00 m s−2)

Explanation

Acceleration is the slope of the rising part of the graph: the velocity goes from 2 to 10 m s−1 in 2 s, so a = 8/2 = 4 m s−2.