# physics

A car trvelling at 60km/h overtakes another car travlling at 42km/h.Assuming each car to be 5.0m long.find the time taken during the overtake.

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1. relative velocity=18km/hr, or 5m/s

time= distance/velocity= 1second

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2. oops, two car lengths must be traverse, not one. time= 2 seconds

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