Two rockect shipbare flying in opposite directions at high speed ivervthe earth

Question

Two rockect shipbare flying in opposite directions at high speed ivervthe earth surface. Relative to the ground , one travels at 0.63c while the other travels at 0.91c . How fast dies one ship move relativevto the other? 0.28c 0.19c 0.98c 0.67c Two rockect shipbare flying in opposite directions at high speed ivervthe earth surface. Relative to the ground , one travels at 0.63c while the other travels at 0.91c . How fast dies one ship move relativevto the other? 0.28c 0.19c 0.98c 0.67c 0.28c 0.19c 0.98c 0.67c

Explanation / Answer

Apply u' = (u-v)/(1 - uv/c2)

u = .91c and v = .63c

u' = (.91c - .63c)/(1 - (.91c)(.63c)/c2)

u' = .656c (Rounding gives you .67c - That is your fourth choice)

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