Energy in a meteor

Recently, a meteor impacted Russia. The estimate of the meteor's size was $$10~\mbox{tons}$$ and it was estimated to have entered the earth's atmosphere at a speed of $$14,600~\mbox{m/s}$$. What was the total kinetic energy of such a meteor in J as it entered the atmosphere?

Details and assumptions

• One ton is $$907~\mbox{kg}$$.
×