Q. 45.0( 1 Vote )

# 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:

A. 60 kmh^{-1}

B. 90 kmh^{-1}

C. 0 kmh^{-1}

D. 180 kmh^{-1}

Answer :

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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