WoRK AND KINETIC ENERGy 工F1 lE SYSTEM WERE丹 SINGLE PARTICLE升 THE C.0.M. THE WORK DONE IS mV-支MV2 WRONG FOR A 5YSTE BVT THE SYSTEM TS A CDLLECTIDN OF PATICLES So THIS NOT THE TOTAL WoRK DONE ON IT. oRK9№EoNM ∫(+于),4 SUM OVERALL PARTICLES: Zw F..dr. zΣ +E2千; 2(+) TAL WoRK