Question

汽车A沿平直公路以速度v0做匀速直线运动,在它路过一辆静止的汽车B时,

B开始做初速度为零、加速度为a的匀加速运动去追赶A车，根据上述条件求：
（1）B车所走的路程
（2）B追上A所用的时间

Answer 1

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Answer 2

1.2v0^2/a
2.2v0/a
用速度时间图象解，老快了