發信人: jerrytkc@netvigator.com (Jerry Tang) 日期: Sun, 5 Jan 2003 16:20:40 +0800 標題: Re: Energy 信群: nsysu.rec.airsoftgun 看板: 來源: :14315, pcd679042.netvigator.com 組織: IMS Netvigator 7.9 GRAINS, not 7.9 GRAMS................... I don't think there is an airgun that has 77 Joules of energy.... "結束了嗎!!??" wrote in message news:M.1041697720.A.6@bbs.nsysu.edu.tw... > > ==> jerrytkc@netvigator.com (Jerry Tang) 的文章中提到: > > Can anyone tell me about the calculation of a gun's energy? > > E = M (V x V)? > > If a gun can shoot a .177 pellet (7.9 grains) at 140m/s, what is its energy > > output? > > Thanks for the info. > > Ek = 0.5 * mV^2 > = 0.5 * 7.9 * 0.001 (kg)* 140^2 > = 77.42 J > > > -- > .................這個世界.................................. > ...................有些東西是.......................... > .....................不需要語言和文字的............ > -- > * Origin: 中山大學-美麗之島BBS * From: 210.58.17.61 [已通過認證] > .