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- In order better to map the surface features of the Moon, a 307 kg imaging satellite is put into circular orbit around the Moon at an altitude of 137 km. Calculate the satellite's kinetic energy ?, gravitational potential energy ?, and total orbital energy ?. The radius and mass of the Moon are 1740 km and 7.36×1022 kg.How do we calculate gravity at higher elevations on earth?A satellite is in a circular orbit at an altitude of 250km above the earth's surface. The onboard rocket provides a Av = 200m/s, calculate the new velocity at perigee (v2) in the transfer orbit, Specific angular momentum of the transfer orbit (h₂), and eccentricity of the transfer orbit (e₂). Hohmann transfer ellipse B Apoapsis AUB Circle Circle AVA A Periapsis