Jawabanmu

2014-05-31T09:05:11+07:00
Ek = 1/2.m.v kuadrat
=1/2.20.25 = 250 J
2014-05-31T09:05:46+07:00
Ek= 1/2.m.V²
Ek= 1/2.20kg.5m/s.5m/s
Ek= 10 kg.25m/s
Ek= 250 Joule