The particle P of mass m is under the influence of gravitation of a huge mass M. At the position the velocity vector makes 90° with the position vector r0as shown. If the initial projection speed u be equal to find out the angle of final direction of departure with OP.
A spacecraft is orbiting the earth in its “parking” orbit with 500 km and 1500 km altitudes at the perigee and apogee positions. If the spacecraft has to be sent away from the earth, what is the most efficient procedure using a single jet impulse?
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