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23 Nov 2019
Consider a spacecraft in an elliptical orbit around the earth. Atthe low point, or perigee, of its orbit, it is 250 above theearth's surface; at the high point, or apogee, it is 2500 above theearth's surface.
a.)Using conservation of energy, find the speed at perigee and thespeed at apogee.
b.)It is necessary to have the spacecraft escape from the earthcompletely. If the spacecraft's rockets are fired at perigee, byhow much would the speed have to be increased to achievethis?
c.)What if the rockets were fired at apogee?
Consider a spacecraft in an elliptical orbit around the earth. Atthe low point, or perigee, of its orbit, it is 250 above theearth's surface; at the high point, or apogee, it is 2500 above theearth's surface.
a.)Using conservation of energy, find the speed at perigee and thespeed at apogee.
b.)It is necessary to have the spacecraft escape from the earthcompletely. If the spacecraft's rockets are fired at perigee, byhow much would the speed have to be increased to achievethis?
c.)What if the rockets were fired at apogee?
Lelia LubowitzLv2
24 Feb 2019
