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一、运动学问题例1甲、乙两汽车同时从甲地驶往乙地,甲在前一半时间和后一半时间的速度分别为V1和V2;乙在前一半路程和后一半路程的速度分别为V1和V2。则甲、乙两汽车,哪一辆先到达乙地?解设甲、乙两地距离为s,甲用时间为t1,乙用时间为t2,据题意得:
1. Kinematic Problems Example 1 Both A and B cars travel from A to B at the same time. A’s speed in the first half and the second half is V1 and V2 respectively; B’s speed in the first half and the second half is respectively. V1 and V2. Then A and B cars, which one arrives at the first place B? Solution A, B, the distance between two places is s, A time is t1, B time is t2, according to the question: