Jawabanmu

2014-06-08T21:32:58+07:00
C. 250 joule................................
1/2 m.vpangkat2
2014-06-08T21:33:41+07:00
Ek= 1/2.m.v²
= 1/2. 0,05 kg .(100 m/s)²
= 1/2. 0,05 kg . 10000 m²/s²
= 1/2. 500 kg m²/s²
= 250 Joule