配套习题- 追及与相遇问题与v-t图像的结合问题 -【青果学院】

1/5单选题

难度：

1.

在平直公路上，自行车与同方向行驶的一辆汽车在t=0时同时经过某一个路标，它们的位移随时间变化的规律为：汽车x=10t-t2，自行车x=5t，(x的单位为m，t的单位为s)，则下列说法正确的是

A	汽车做匀加速直线运动，自行车做匀速直线运动
B	经过路标后的较短时间内自行车在前，汽车在后
C	在t=2.5 s时，自行车和汽车相距最远
D	当两者再次同时经过同一位置时，它们距路标12.5 m

正确答案：Qw==

PHA+55Sx5rG96L2m5ZKM6Ieq6KGM6L2m5L2N56e76ZqP5pe26Ze05Y+Y5YyW55qE6KeE5b6L55+l77yM5rG96L2m5YGa5YyA5YeP6YCf6L+Q5Yqo77yMdjA9MTAgbS9z77yMYT0tMiBtL3My77yM6Ieq6KGM6L2m5YGa5YyA6YCf55u057q/6L+Q5Yqo77yMdj01IG0vc++8jOaVhUHjgIFC6ZSZ6K+vLuW9k+axvei9pumAn+W6puWSjOiHquihjOi9pumAn+W6puebuOetieaXtu+8jOebuOi3neacgOi/nC7moLnmja52PXYwK2F077yMdD0yLjUgc++8jEPmraPnoa4u5b2T5Lik6L2m5L2N56e755u4562J5pe25YaN5qyh57uP6L+H5ZCM5LiA5L2N572uLOaVhTEwdOKAsi104oCyMj01dOKAsizop6Plvpd04oCyPTUgcyx4PTI1IG3vvIzmlYVE6ZSZ6K+vPC9wPg==

2/5单选题

难度：

2.甲、乙两辆汽车，同时在一条平直的公路上自西向东运动，开始时刻两车平齐，相对于地面的v－t图象如图所示，关于它们的运动，下列说法正确的是

A	甲车中的乘客说，乙车先以速度v₀向西做匀减速运动，后向东做匀加速运动
B	乙车中的乘客说，甲车先以速度v₀向西做匀减速运动，后做匀加速运动
C	根据v－t图象可知，开始乙车在前，甲车在后，两车距离先减小后增大，当乙车速度增大到v₀时，两车恰好平齐
D	根据v－t图象可知，开始甲车在前，乙车在后，两车距离先增大后减小，当乙车速度增大到v₀时，两车恰好平齐

正确答案：QQ==

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

3/5单选题

难度：

3.在平直公路上，自行车与同方向行驶的一辆汽车在t=0时同时经过某一个路标，它们的位移随时间变化的规律为：汽车x=10t-t2，自行车x=5t，(x的单位为m，t的单位为s)，则下列说法正确的是

A	汽车做匀加速直线运动，自行车做匀速直线运动
B	经过路标后的较短时间内自行车在前，汽车在后
C	在t=2.5 s时，自行车和汽车相距最远
D	当两者再次同时经过同一位置时，它们距路标12.5 m

正确答案：Qw==

55Sx5rG96L2m5ZKM6Ieq6KGM6L2m5L2N56e76ZqP5pe26Ze05Y+Y5YyW55qE6KeE5b6L55+l77yM5rG96L2m5YGa5YyA5YeP6YCf6L+Q5Yqo77yMdjA9MTAgbS9z77yMYT0tMiBtL3My77yM6Ieq6KGM6L2m5YGa5YyA6YCf55u057q/6L+Q5Yqo77yMdj01IG0vc++8jOaVhUHjgIFC6ZSZ6K+vLuW9k+axvei9pumAn+W6puWSjOiHquihjOi9pumAn+W6puebuOetieaXtu+8jOebuOi3neacgOi/nC7moLnmja52PXYwK2F077yMdD0yLjUgc++8jEPmraPnoa4u5b2T5Lik6L2m5L2N56e755u4562J5pe25YaN5qyh57uP6L+H5ZCM5LiA5L2N572uLOaVhTEwdOKAsi104oCyMj01dOKAsizop6Plvpd04oCyPTUgcyx4PTI1IG3vvIzmlYVE6ZSZ6K+v

4/5单选题

难度：

4.从同一地点同时开始沿同一直线运动的两个物体Ⅰ、Ⅱ的速度—时间图象如图所示. 在0～t₂时间内，下列说法中正确的是

A	Ⅰ物体所受的合外力不断增大，Ⅱ物体所受的合外力不断减小
B	在第一次相遇之前，t₁时刻两物体相距最远
C	t₂时刻两物体相遇
D	Ⅰ、Ⅱ两个物体的平均速度大小都是

正确答案：Qg==

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

5/5多选题

难度：

5.甲、乙两物体相距s，同时同向沿同一直线运动，甲在前面做初速度为零、加速度为a₁的匀加速直线运动，乙在后做初速度为υ₀，加速度为a₂的匀加速直线运动，则

A	若a₁＝a₂，则两物体可能相遇一次
B	若a₁＞a₂，则两物体可能相遇二次
C	若a₁＜a₂，则两物体可能相遇二次
D	若a₁＞a₂，则两物体也可相遇一次或不相遇

正确答案：QSxCLEQ=

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