一物体作如图所示的斜抛运动,测得在轨道 A 点处速度大小为 v 0 ,其方向与水平方向成 30° 角。则物体在 A 点的切向加速度 a τ = ,轨道的曲率半径 = 。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【单选题】1 After graduating from high school in Michigan, Madonna received a dance scholarship to the University of Michigan School of Music, Theatre & Dance. After convincing her father to allow her to takeba...
【简答题】She was ____around in her bag ____her keys. 1. may as well; 2. get onto; 3. come up with; 4. out of concern for; 5. take one's word for it (that...); 6. as a matter of fact; 7. rummage... for; 8. pitc...