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JAMB Physics 2012 Question 5

Question 5

Motion

From the velocity-time graph shown above, which of the following quantities CANNOT be determined?

Diagram for this question
  1. A.Deceleration
  2. B.Initial velocity
  3. C.Total distance travelled
  4. D.Initial acceleration.
Show the answer and explanation

Answer: D (Initial acceleration.)

Explanation

The graph starts at 60 m s−1, so the initial velocity, the deceleration (slope from 20 s to 25 s) and the distance (area) can all be read. How the body reached 60 m s−1 is not shown, so its initial acceleration cannot be found.