Question
A car moving at 15 m/s noticed another car ahead moving at 9 m/s and accelerated to catch it. If the distance between them was 180 metres, find the time required to catch the slower car.
Solution
Relative speed of faster car w.r.t slower car = 15 − 9 = 6 m/s
So, required time = 180 ÷ 6 = 30 seconds
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