A--->1000m1000m

学习 时间:2026-04-07 21:50:10 阅读:6918
A--->1000m1000m

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欣慰的玉米

可靠的冬日

2026-04-07 21:50:10

设花时间t赶上则人行走的总路程为s=1000+5t汽车行走路程为s1=0。5*a*t^2要赶上必须满足s1>=s,此处用s1=s计算则有1000+5t=0。5*a*t^2若在c之前追上,则1000+5t〈=2000,用2000计算,则t=200则0。5*a*t^2=2000代入t=200得a=0。1m/s^2

最新回答共有2条回答

  • 潇洒的小笼包
    回复
    2026-04-07 21:50:10

    设花时间t赶上则人行走的总路程为s=1000+5t汽车行走路程为s1=0。5*a*t^2要赶上必须满足s1>=s,此处用s1=s计算则有1000+5t=0。5*a*t^2若在c之前追上,则1000+5t〈=2000,用2000计算,则t=200则0。5*a*t^2=2000代入t=200得a=0。1m/s^2

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