a car travelling at 60 km/hr overtakes another car travelling at 42 km/hr. assuming each car to be 5.0 m long. Find the time taken during the overtake.

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Solution

As the second car overtakes teh first one the total distance travelled by the second car will be 5m + 5m = 10m.
Now, let the time taken to overtake the car be t seconds
Therefore,
distance travelled by seconds car in time t = distance travelled by first car in t + total overtaking distance, so
60t=42t+0.01
or
t=1/1800hr or 2s
Therefore time required to overtake the car is 2 seconds.

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