作者zzziiii (血的味道)
看板TransPhys
标题[考古] 93中正
时间Sun Jul 3 00:57:56 2005
8. The total energy of a particle is four times its rest energy.
Find (A) its kinetic energy
(B) its speed
2. A particle of mass M moves in the XY plane . Its coordinates as a
funtion of time are given by X(t)= At^3 ; Y(t)= Bt^4+Ct^2
where A B C are constant .
Find (A) its angular momentum about the orgin .
(B) What force acts on it
麻烦各位大大了 ^^
非常谢谢解答 ! ~
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1F：推 bzvxc:2题套公式即可 140.116.145.74 07/05