A driver travelling at 126 km/h reacts to a hazard after 1.5 seconds. How far does the car travel during this reaction time?
Answer and explanation
Correct answer: D. 52.5 m
- Step 1: 126 km/h is 126 / 3.6 = 35 m/s.
- Step 2: Reaction distance = 35 x 1.5 = 52.5 m.
Answer
52.5 m.
Why not the others: 189 m multiplies km/h by seconds without converting units; 35 m is only the distance covered in one second; 105 m is double the correct value.
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