What does an observer in one of rockets measure for speed

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Two rockets are approaching each other along a straight line. A observer on the Earth measures a velocity of .6c for each rocket.

What does an observer in one of the rockets measure for the speed of the other rocket?

a) .6c b) .7c c) .8c d) .9c e) .95c f) .995c

Reference no: EM13976105

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