civil_express 版 (精华区)

寄信人: momo (假装不知道)
标  题: P4
发信站: BBS 听涛站 (Fri Jan 14 23:14:21 2005)
来  源: 219.224.148.70

1. 1.√
   2.x
   3.√
   4.最高点，懒得算了……就是1/(d(dy/dx)/dx)                        
2.匀速直线运动，匀速率运动                                          
3.第二种，第一种求的是d|r|/dt，第二种求的是v=dr/dt
5. 1.x'=-vt y'=v0*t-0.5*gt*t
   2.抛物线
   3.g，竖直向下                                                    
6. 1.√                                                             
   2.x                                                              
【 在 tenday (十日谈) 的来信中提到: 】                              
: 标  题: 红书第4页                                                 
: 发信站: BBS 听涛站 (Fri Jan 14 22:54:19 2005)                     
: 来  源: 219.224.157.76                                            
:                                                                   
: 讨论题的第1，2，3，5，6