A car travels 100, km east and then 100 ,km south. Finally, it comes back to starting point by south

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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 $60\, km h ^{-1}$. The average velocity for the whole journey if time taken is $3.3$ hours is

A

$60\, km\, h ^{-1}$

B

$90\, km\, h ^{-1}$

C

$180 \,km \,h ^{-1}$

D

$0 \,km \,h ^{-1}$

Solution

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Standard 9

Science

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