Wednesday, August 10, 2011

What is the speed of the command module relative to Earth just after the separation?

A space vehicle is traveling at 4000 km/h relative to the Earth when the exhausted rocket motor is disengaged and sent backward with a speed of 78 km/h relative to the command module. The m of the motor is four times the m of the module. What is the speed of the command module relative to Earth just after the separation?

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