Jawabanmu

2014-02-08T12:49:25+07:00
Ek= \frac{1}{2} m v^{2}
250= \frac{1}{2} 50 v^{2}
250-25= v^{2}
225= v^{2}
v=15

momentum (p)= m.v
momentum(p) = 0,05.15
= 0,75 kgm/s
2014-02-08T13:16:25+07:00
M=50 gram=0,05 kg
Ek=250 joule
Ek=1/2mv²
250=1/2.0,05.v²
250=0,025v²
v²=10000
v=100
p=m.v
p=0,05.100
p=5 kg m/s
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