(II) For a satellite of mass in a circular orbit of radius r_S around the Earth, determine
(a) its kinetic energy K
About 50,000 years ago, a meteor crashed into the earth near present-day Flagstaff, Arizona. Some estimates suggest this meteor had a mass of about 1.4×108 kg and released 1×1016 J of energy when it slammed into the Earth. Calculate the approximate speed of this meteor before impact.