Question
Bike ‘A’ is 150 metres ahead of bike ‘B’. Bike
‘A’ is travelling at 16 m/s and bike ‘B’ is travelling at 54 km/h. If both bikes are moving in the same direction, how long will bike ‘B’ take to overtake bike ‘A’?Solution
Speed of bike ‘B’ = 54 ÷ 3.6 = 15 m/s
So, relative speed of bike ‘B’ with respect to bike ‘A’ = 15 – 16 = –1 m/s
Since the relative speed is negative, bike ‘B’ will never overtake bike ‘A’.
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