汽车以大小为20m/s的速度做匀速直线运动。刹车后,获得的加速度的

汽车以大小为20m/s的速度做匀速直线运动。刹车后,获得的加速度的大小为5m/s2,那么刹车后2s内与刹车后6s内汽车通过的路程之比为(      )
A.1∶1                      B.3∶1                       C.4∶3                      D.3∶4

答案

D

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