星际火箭以0.8c的速率飞行,其运动质量是静止质量的多少倍?
V=(v'+u)/{1+[(v'*u)/(c^2)] }
=(0.99c+0.99c)/{1+[(0.99c*0.99c)/(c^2)] }
=1.98c/[1+0.99*0.99]
=.