会讲物理、能讲的明白的进.甲车在前以v0速度匀速行使,乙车在后以较大的速度同向行使,为避免相撞,乙车以大小为2米每二次方秒的加速度匀减速运动,经过5s时两车相距最近为20m,求4s时两车相
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![会讲物理、能讲的明白的进.甲车在前以v0速度匀速行使,乙车在后以较大的速度同向行使,为避免相撞,乙车以大小为2米每二次方秒的加速度匀减速运动,经过5s时两车相距最近为20m,求4s时两车相](/uploads/image/z/10085622-6-2.jpg?t=%E4%BC%9A%E8%AE%B2%E7%89%A9%E7%90%86%E3%80%81%E8%83%BD%E8%AE%B2%E7%9A%84%E6%98%8E%E7%99%BD%E7%9A%84%E8%BF%9B.%E7%94%B2%E8%BD%A6%E5%9C%A8%E5%89%8D%E4%BB%A5v0%E9%80%9F%E5%BA%A6%E5%8C%80%E9%80%9F%E8%A1%8C%E4%BD%BF%2C%E4%B9%99%E8%BD%A6%E5%9C%A8%E5%90%8E%E4%BB%A5%E8%BE%83%E5%A4%A7%E7%9A%84%E9%80%9F%E5%BA%A6%E5%90%8C%E5%90%91%E8%A1%8C%E4%BD%BF%2C%E4%B8%BA%E9%81%BF%E5%85%8D%E7%9B%B8%E6%92%9E%2C%E4%B9%99%E8%BD%A6%E4%BB%A5%E5%A4%A7%E5%B0%8F%E4%B8%BA2%E7%B1%B3%E6%AF%8F%E4%BA%8C%E6%AC%A1%E6%96%B9%E7%A7%92%E7%9A%84%E5%8A%A0%E9%80%9F%E5%BA%A6%E5%8C%80%E5%87%8F%E9%80%9F%E8%BF%90%E5%8A%A8%2C%E7%BB%8F%E8%BF%875s%E6%97%B6%E4%B8%A4%E8%BD%A6%E7%9B%B8%E8%B7%9D%E6%9C%80%E8%BF%91%E4%B8%BA20m%2C%E6%B1%824s%E6%97%B6%E4%B8%A4%E8%BD%A6%E7%9B%B8)
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