A spacecraft is moving past earth with a velocity of 07c
A spacecraft is moving past Earth with a velocity of 0.7c. It launches a rocket that moves in the same direction as the spacecraft at a speed of 0.8c. What is the speed of the rocket relative to Earth?
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a rolling ball moves from x1 34cm to x2 -42cm during the timefrom t1 30s to t2 51s what is its average
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