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(law of the conservation of energy)

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E=-E
Fx=-Fx
E: ¥¨¥Í¥ë¥®¡¼(»Å»ö)
F: ÎÏ
x: Ťµ

Fx
¦¤Fx/¦¤t=(¦¤F/¦¤t)x+F(¦¤x/¦¤t)
¦¤F/¦¤t=F'
¦¤x/¦¤t=v
¦¤Fx/¦¤t=F'x+Fv
¦²(¦¤Fx/¦¤t)¦¤t=¦²F'x¦¤t+¦²Fv¦¤t
¦²¦¤Fx=¦²F'x¦¤t+¦²Fv¦¤t
¦²¦¤Fx=Fx
Fx=¦²F'x¦¤t+¦²Fv¦¤t

mvv
(mvv)'=¦¤mvv/¦¤t
¦¤mvv/¦¤t=(¦¤mv/¦¤t)v+mv(¦¤v/¦¤t)
¦¤mvv/¦¤t=m(¦¤v/¦¤t)v+mv(¦¤v/¦¤t)
¦¤v/¦¤t=a
¦¤mvv/¦¤t=mav+mva
¦¤mvv/¦¤t=mav+mav
¦¤mvv/¦¤t=2mav
F=ma
¦¤mvv/¦¤t=2Fv
¦²(¦¤mvv/¦¤t)¦¤t=2¦²Fv¦¤t
¦²¦¤mvv=2¦²Fv¦¤t
¦²¦¤mvv=mvv
mvv=2¦²Fv¦¤t
(1/2)mvv=¦²Fv¦¤t

Fx=¦²F'x¦¤t+¦²Fv¦¤t
(1/2)mvv=¦²Fv¦¤t
Fx+(1/2)mvv=¦²F'x¦¤t+2¦²Fv¦¤t
¦²F'x¦¤t+2¦²Fv¦¤t¡âC=1
Fx+(1/2)mvv¡âC=1