(a) What is the escape speed on a spherical asteroid whose radius is 624 km and whose gravitational acceleration at the surface is 0.767 m/s2? (b) How far from the surface will a particle go if it leaves the asteroid's surface witharadial speed of 734 m/s? (c) With what speed will an object hit the asteroid if it is dropped from 473.5 km above the surface?

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Central Force

Central force is the force that acts along the center of mass of one body to the center of mass of another body. Its direction from or away from a point on a body to another is called the center of the force. Such forces include gravitational force between two massive objects or electrostatic forces between two charged particles. So from atoms to planets, the central forces play an important role in shaping our daily lives. One of the remarkable features of central forces is that they are conservative, i.e. the total energy of a central force system can always be expressed as a gradient of a potential energy function.