两人百米赛跑,甲速度为6.5m/s.乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒两人百米赛跑,甲速度为6.5m/s,乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/25 00:03:51
![两人百米赛跑,甲速度为6.5m/s.乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒两人百米赛跑,甲速度为6.5m/s,乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒](/uploads/image/z/1341423-63-3.jpg?t=%E4%B8%A4%E4%BA%BA%E7%99%BE%E7%B1%B3%E8%B5%9B%E8%B7%91%2C%E7%94%B2%E9%80%9F%E5%BA%A6%E4%B8%BA6.5m%2Fs.%E4%B9%99%E9%80%9F%E5%BA%A6%E4%B8%BA7m%2Fs%2C%E8%8B%A5%E4%B9%99%E8%AE%A9%E7%94%B2%E5%85%88%E8%B7%911%E7%A7%92%2C%E5%88%99%E4%B9%99%E8%BF%BD%E4%B8%8A%E7%94%B2%E8%A6%81%E5%87%A0%E7%A7%92%E4%B8%A4%E4%BA%BA%E7%99%BE%E7%B1%B3%E8%B5%9B%E8%B7%91%2C%E7%94%B2%E9%80%9F%E5%BA%A6%E4%B8%BA6.5m%2Fs%2C%E4%B9%99%E9%80%9F%E5%BA%A6%E4%B8%BA7m%2Fs%2C%E8%8B%A5%E4%B9%99%E8%AE%A9%E7%94%B2%E5%85%88%E8%B7%911%E7%A7%92%2C%E5%88%99%E4%B9%99%E8%BF%BD%E4%B8%8A%E7%94%B2%E8%A6%81%E5%87%A0%E7%A7%92)
两人百米赛跑,甲速度为6.5m/s.乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒两人百米赛跑,甲速度为6.5m/s,乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒
两人百米赛跑,甲速度为6.5m/s.乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒
两人百米赛跑,甲速度为6.5m/s,乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒
两人百米赛跑,甲速度为6.5m/s.乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒两人百米赛跑,甲速度为6.5m/s,乙速度为7m/s,若乙让甲先跑1秒,则乙追上甲要几秒
6/(7-6.5)=12s
6/(7-6.5)=12s
11秒 甲乙速度差为0.5s,距离为6.5m 6.5\0.5+=11s
6.5*1+6.5X=7X 求X
0.5X=6.5
X=13 s