If a car is moving at a velocity of 30 ms−-1 then slows down uniformly to 20ms−1 in 6s. Its retardation will be

If a car is moving at a velocity of 30 ms−-1 then slows down unifor

1.	If a car is moving at a velocity of 30 ms−-1 then slows down uniformly to 20ms−1 in 6s. Its retardation will be
A.	5 ms−2
B.	2.33 ms−2
C.	1.67 ms−2
D.	4 ms−2
Answer» D. 4 ms−2