- #1
Jalo
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Homework Statement
Two spaceships (A and B) are traveling in opposite ways. An observer in Earth measures both velocities.
The speed of ship A (Va) = 0.75c.
The speed of ship B (Vb) = 0.85c.
What's the speed of **** B regarding ship A?
Homework Equations
The Attempt at a Solution
At first I tried solving it using Galileu's relativity, but I've reached the result of 1.6c.
Then I remembered that when we're dealing with speeds close to c we have to use Einstein's special relativity, so I've looked around all the formulas I have but none of them involved velocity, only time, spaceship length, and there are also the ones involving energy but I don't think that has nothing to do with this exercise.
Thanks!