Determine the speed v required of an earth satellite at point A for (a) a circular orbit...

Determine the speed v required of an earth satellite at point A for (a) a circular orbit, (b) an elliptical orbit of eccentricity e = 0.1, (c) an elliptical orbit of eccentricity e = 0.9, and (d) a parabolic orbit. In cases (b), (c), and (d), A is the orbit perigee.