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January 30, 2015

January 30, 2015

Posted by **gobind** on Sunday, April 8, 2007 at 1:13pm.

(a) Calculate the period of revolution of the asteroid in years.

(b) What is the ratio of the kinetic energy of the asteroid to the kinetic energy of Earth (Kasteroid / KEarth)?

I repeat: Is there not a Kepler law that relates radius of orbit to period?

since T^2 is proportional to r^3, (a) should be sqrt(2.9^3)years.

(b) find velocity of both the earth (make radius of earth =1r and radius of asteroid=2.9r)the r's will cancel out

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