Problem

20.甲、乙两人沿400米环形跑道练习跑步，两人同时从跑道的同一地点向相反方向跑去。相遇后甲比原来 速度增加2米 / 秒，乙比原来速度减少2米 / 秒, 结果都用24秒同时回到原地。求甲原来的速度。

Answer

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Answer

3. Final Answer: v1=443 m/s

Steps

Step 1 ：1. Set up the equations: (v1+2)∗24=400, (v2−2)∗24=400, and v1∗t1=v2∗t2

Step 2 ：2. Solve the equations to find the value of v1: v1=443 m/s

Step 3 ：3. Final Answer: v1=443 m/s

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