试题与答案

t=0时,甲乙 两汽车从相距70 km的两地开始相向行驶,它们的v-t图象如图所

题型:不定项选择

题目:

t=0时,甲乙 两汽车从相距70 km的两地开始相向行驶,它们的v-t图象如图所示, 忽略汽车掉头所需时间.下列对汽车运动状况的描述正确的是 

[ ]

A.在第1h末,乙车改变运动方向

B.在第2h末,甲乙两车相距10 km

C.在前4h内,乙车运动加速度的大小总比甲车的大

D.在第4h末,甲乙两车相遇

答案:

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1.× 2.√ 3.√ 4.√ 5.×

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