WAEC Further Mathematics 2018 Question 39

Question 39

Dynamics

A car is moving at a speed of 120 kmh−1. Find its speed in ms−1

  1. A.33.3 ms−1
  2. B.66.6 ms−1
  3. C.99.9 ms−1
  4. D.120.0 ms−1
Show the answer and explanation

Answer: A (33.3 ms−1)

Explanation

120 km/h = 120 000 m ÷ 3600 s ≈ 33.3 ms⁻¹.