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Unilorin Post-UTME Physics 2021 (Model questions) Question 10

Question 10

Motion

A body moving with an initial velocity u accelerates until it attains a velocity of v within a time t. The distance, covered by the body is given by the expression

  1. A.s = ((v − u)/2)t
  2. B.s = ((v + 2u)/2)t
  3. C.s = ((v + u)/2)t
  4. D.s = ((2v + u)/2)t
Show the answer and explanation

Answer: C (s = ((v + u)/2)t)

Explanation

With uniform acceleration, distance = average velocity × time = ((u + v)/2)t.