Hi ppl. I have a short question. A meteorite of mass m has a velocity u=2.00*10^4 m/s when it is at an infinite distance from the earth. It eventually collides with the eath with a velocity v. Calculate v. given are the radius of earth(6.37*10^6m) and go=9.80Nkg^-1)(adsbygoogle = window.adsbygoogle || []).push({});

I used the argument that the change in kinetic energy is going to be equal to 0.5m(v^2-u^2) which also equals GMem/2Re which resolves to goRem/2. Equating and calculating gives 2.15*10^4m/s. Could someone verify that this is correct and that potential energy or total energy is not neglected in my reasoning? thanks, joe

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# Meteorite heading towards earth

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