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. `10 ms ^(-1) , 0`
B. `0,0`
C. `0,10 ms ^(-1) `
D. `10 ms ^(-1) ,10 ms ^(-1)`

Answer

C

Explanation

In one circular lap, displacement = zero
Distance covered = ` 2 pir = 2 xx 3.14 xx 100 m`
Average velocity `= ("Displacement")/(" Time taken ") = 0 / (62.8) =0`
Average speed = `("Displacement travelled")/(" Time taken") = (2xx3.14 xx 100m)/(62.8 s) = 10 ms^(-1)`