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Unilorin Post-UTME Physics 2021 (Model questions) Question 7

Question 7

Motion

An object of mass 2 kg moves with a uniform speed of 10 ms−1 for 5 s along a straight path. Determine the magnitude of its acceleration.

  1. A.0ms−2
  2. B.1ms−2
  3. C.3ms−2
  4. D.4ms−2
Show the answer and explanation

Answer: A (0ms−2)

Explanation

Uniform speed in a straight line means the velocity does not change, so the acceleration is zero.