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September 19, 2014

September 19, 2014

Posted by **sam** on Sunday, December 23, 2012 at 2:35pm.

- Astronomy -
**drwls**, Tuesday, December 25, 2012 at 9:15amFirst compute the mass of the asteroid from its density and radius,r. Call it m.

m = (4/3)pi*r^3

Then compute E = G*M*m/R, where

R is the radis of the Earth

M is the mass of the Earth

m is the mass of the asteroid

G is Newton's universal constant of gravity

E is the energy of the collision,in Joules, assuming the asteroid approaches from infinity. Convert it to megatons of TNT using the specified conversion factor.

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