试题与答案

(12分)一辆长途客车正在以V0=20m/s的速度匀速行驶.突然,司机看见车的正

题型:计算题

题目:

(12分)一辆长途客车正在以V0=20m/s的速度匀速行驶.突然,司机看见车的正前方x=34m处有一只狗,如图(甲)所示,司机立即采取制动措施.若从司机看见狗开始计时(),长途客车的“速度-时间”图象如图(乙)所示,求:

(1)求长途客车从司机发现狗至停止运动的这段时间内前进的距离;

(2)求长途客车制动时的加速度;

(3)若狗正以V1=4m/s的速度与长途客车同向奔跑,问狗能否摆脱被撞的噩运?

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B

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