Jawabanmu

2014-09-09T07:18:52+07:00
Usaha = W
W=F.s
= m.g.s
= 50.10.5
= 2500 kgm2/s2

daya = P
P=W.t
= 2500.10.(60) ..... dijadikan detik
= 1500000 watt/sekon