Jawabanmu

2014-06-12T15:49:47+07:00
Weight = mass x gravity

= 80 x 9,78

= 782,4 Newton
2014-06-12T15:59:10+07:00
W=m.g
w=80x9,78
w= 782.4 Newton
ket:
w= berat benda (N)
m= massa (kg)
g= gravitasi (m/s^2)