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Question

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


A

60Km/hr

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B

90Km/hr

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C

0Km/hr

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D

180Km/hr

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Solution

The correct option is C

0Km/hr


Step 1: Given data

we know that,
velocity=displacementtimetaken

Step 2: Calculating displacement and velocity

Now, displacement=finalposition-initialposition
Since the car comes back to its starting point, so, displacement=0
therefore, velocity=03.3hour=0km/hr.

Hence, option C is correct. 0Km/hr.


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