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JAMB Physics 1994 Question 5

Question 5

Motion

A motor vehicle is brought to rest from a speed of 15 m s−1 in 20 seconds. Calculate the retardation.

  1. A.0.75 m s−2
  2. B.1.33 m s−2
  3. C.5.00 m s−2
  4. D.7.50 m s−2
Show the answer and explanation

Answer: A (0.75 m s−2)

Explanation

Retardation = change in velocity ÷ time = 15 ÷ 20 = 0.75 m s−2.