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(a) What is the escape speed on a spherical asteroid whose radius is 633 km and...

(a) What is the escape speed on a spherical asteroid whose radius is 633 km and whose gravitational acceleration at the surface is 0.707 m/s2? (b) How far from the surface will a particle go if it leaves the asteroid's surface with a radial speed of 601 m/s? (c) With what speed will an object hit the asteroid if it is dropped from 868.7 km above the surface?
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