Q4 of 59 Page 255

A car travels 100 km east and then 100 km south. Finally, it comes back to the starting point by the south-east route. Throughout the journey the speed is constant at 60 kmh-1. The average velocity for the whole journey if time taken is 3.3 hours is:

We know that, Velocity =


Now, Displacement = Final Position – Initial position


Since, the car comes back to its starting point, so, displacement = 0


Therefore, Velocity = = 0 kmh-1


Hence, option C is correct

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2

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