Jawabanmu

2014-03-26T16:31:44+07:00
Ep = m.g.h
     = 3. 10 . 40
     = 1200
2014-03-26T17:17:47+07:00
Diketahui:
massa= 3kg
h = 50m
g = 10 m/s²

ditanyakan :
 Ep.....?

Jwb :
ep = m x g x h
     = 3 x 10 x 50
     = 1500  J