initia f : final i. m tomi 1st V.in 2nd 碰 楦 mmi 6kg Mz ! 2nd 0 M3 M2 = V2 f , - 橦 M3 M3 ) 北 2nd 2nd zm mtm.int mtmihi 4 2nd K.f-OY.fi 碰撞 後 仰 ⇐ 2nd m ' 0 5 2nd 以 z Y.fi 碰撞 前 仰 2nd Mz mtmin.it mitmi 2nd 2nd Vmzi 1st 5 以 2 , 1st Vmzjf ⼆ 1st ⼆ Vmf m-M.it 2m Vnn m.tm.Vm.li M.tn 1st 1st 2m ⼆ m.hn (b) vǜff 5以 m, ⼆ 0 1st Vmitmtm cnn.tn 5 … 碰撞 1st Vmf 2nd Mimi 6kg 1 ⽇ V3 i 0 Mim Vmin 2 距 t.o.3sxm.tl ⾔ 0.3N 速 : tz ⼆ ⼆ ⼆ ⼗, ⼗ 六 ⼆ 0.5N t = 1 0 , xm.it llo.dk 51 xmzi 4 Xmi 4th -0.51 ✗ 5