rocket with a mass of 5.00 x 10^4 kg is traveling at 6.00 x 10^3 m/s relative to a space station. What mass will the rocket have after it fires its engines in order to reach a relative speed of 8.00 x 10^3 m/s, traveling in the same direction? Assume an exhaust velocity of 4.50 x 10^3 m/s

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