试题与答案

汽车以10 m/s的速度在平直公路上匀速行驶,刹车后经2 s速度变为6 m/s,

题型:计算题

题目:

汽车以10 m/s的速度在平直公路上匀速行驶,刹车后经2 s速度变为6 m/s,求:

(1)刹车后2 s内前进的距离及刹车过程中的加速度大小;

(2)刹车后前进9 m所用的时间;

(3)刹车后8 s内前进的距离.

答案:

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