Jawabanmu

2014-01-31T06:03:59+07:00
M=3M₀

M=M₀/ \sqrt{1 - V^2/C^2}
3M₀=M₀/ \sqrt{1 - V^2/C^2}
 \sqrt{1 - V^2/C^2} =1/3
1 - V²/C² = 1/9
9/9 - 1/9 = V²/C²
8/9C² = V²
V = 2 \sqrt{2} /3C