1.

) What is escape velocity? Assuming that the earth performsuniform circular motion around the Sun, find thecentripetal acceleration of the earth. [Speed of theearth=3× 104 m/s, distance between the earth and theSun 1.5 x 1011 m]

Answer»

Escape velocity is the speed that an object needs to be traveling to break free of a planet or moon's gravity well and leave it without further propulsion. For example, a spacecraft leaving the surface of Earth needs to be going 7 miles per second, or nearly 25,000 miles per hour to leave without falling back to the surface or falling into orbit.



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