1足球运动员在罚点球时,球获得30m/s的速度并近似做匀速直线运动,设脚与球作用时间为0.1s,球运动了0.3s后被守门员挡住,守门员双手与球接触时间为0.1s,且球被挡出后以10m/s沿原路返弹.求:(1
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 18:13:21
![1足球运动员在罚点球时,球获得30m/s的速度并近似做匀速直线运动,设脚与球作用时间为0.1s,球运动了0.3s后被守门员挡住,守门员双手与球接触时间为0.1s,且球被挡出后以10m/s沿原路返弹.求:(1](/uploads/image/z/4335433-25-3.jpg?t=1%E8%B6%B3%E7%90%83%E8%BF%90%E5%8A%A8%E5%91%98%E5%9C%A8%E7%BD%9A%E7%82%B9%E7%90%83%E6%97%B6%2C%E7%90%83%E8%8E%B7%E5%BE%9730m%2Fs%E7%9A%84%E9%80%9F%E5%BA%A6%E5%B9%B6%E8%BF%91%E4%BC%BC%E5%81%9A%E5%8C%80%E9%80%9F%E7%9B%B4%E7%BA%BF%E8%BF%90%E5%8A%A8%2C%E8%AE%BE%E8%84%9A%E4%B8%8E%E7%90%83%E4%BD%9C%E7%94%A8%E6%97%B6%E9%97%B4%E4%B8%BA0.1s%2C%E7%90%83%E8%BF%90%E5%8A%A8%E4%BA%860.3s%E5%90%8E%E8%A2%AB%E5%AE%88%E9%97%A8%E5%91%98%E6%8C%A1%E4%BD%8F%2C%E5%AE%88%E9%97%A8%E5%91%98%E5%8F%8C%E6%89%8B%E4%B8%8E%E7%90%83%E6%8E%A5%E8%A7%A6%E6%97%B6%E9%97%B4%E4%B8%BA0.1s%2C%E4%B8%94%E7%90%83%E8%A2%AB%E6%8C%A1%E5%87%BA%E5%90%8E%E4%BB%A510m%2Fs%E6%B2%BF%E5%8E%9F%E8%B7%AF%E8%BF%94%E5%BC%B9.%E6%B1%82%EF%BC%9A%EF%BC%881)
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