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 :

Options

A. Velocity `10` m/s, speed `10` m/s
B. Velocity zero, speed `10` m/s
C. Velocity zero, speed zero
D. Velocity `10` m/s, speed zero

Answer

B

Explanation

`"Average speed"=("Total distance")/("Total time taken")=(2pir)/(62.8)`
`=(2xx3.14xx100)/(62.8)=10` m/s
`"Average velocity"=("Total displacement")/("Total time taken")=(0)/(62.8)` = zero