a) An enemy spacecraft moves away from the Earth at a speed of v = 0.800c. A galactic patrol spacecraft pursues at a speed of u = 0.900c relative to the Earth. Calculate the speed of the patrol spacecraft as measured by the pilot's enemy spacecraft.
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800c and the speed of the galactic patrol spacecraft relative to Earth is u = 0.900c. Show more…
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An enemy spacecraft moves away from the Earth at a speed of $v=0.800 c(\text { Fig. } \mathrm{P} 39.29) .$ A galactic patrol spacecraft pursues at a speed of $u=0.900 \mathrm{c}$ relative to the Earth. Observers on the Earth measure the patrol craft to be over- taking the enemy craft at a relative speed of 0.100$c$ . With what speed is the patrol craft overtaking the enemy craft as measured by the patrol craft's crew?
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