A cyclist starts from rest and accelerates uniformly at 4 m/s. How far does the cyclist travel in 5 s?

Answer and explanation

Correct answer: D. 50 m

  1. Step 1: Starting from rest, .
  2. Step 2: m.
Answer
50 m.
Why not the others: 100 m: the factor is missing. 10 m: time is not squared. 20 m: that is the final speed, not the distance.

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A cyclist starts from… | HKDSE (Hong Kong) Force and Motion