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JAMB Physics 2010 Question 5

Question 5

Motion

A car moves with an initial velocity of 25 ms−1 and reaches a velocity of 45 ms−1 in 10s. What is the acceleration of the car?

  1. A.5 ms−2
  2. B.25 ms−2
  3. C.20 ms−2
  4. D.2 ms−2
Show the answer and explanation

Answer: D (2 ms−2)

Explanation

a = (v − u)/t = (45 − 25) ÷ 10 = 2 m s−2.