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A car runs at a constant speed on a circ...

A car runs at a constant speed on a circulat track of radius ` 100 m`. Taking `62.8 s` for every circular lap. The average velocity and average speed for each circular lap respectively are :

A

`5 m//s,10 m//s`

B

`0 m//s ,10 m//s`

C

`0 m//s,5 m//s`

D

`10 m//s,5m//s`

Text Solution

Verified by Experts

The correct Answer is:
B
For one revolution , displacement `=0` and distance travelled `=2pi r`
` therefore ` Average velocity `=("Displacement ")/("Time")=0`
and Average speed `=(2pi r) /( t) = (2xx3.14xx100)/(62.8) = 10 m//s`
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