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A meteor with a mass 2.5x10^10 kg is headed towards Earth. It is observed that an...

A meteor with a mass 2.5x10^10 kg is headed towards Earth. It is observed that an altitude of 4,000 Km it has a speed of 3.2 Km/s. What is the speed of the meteor (in Km/s) on impact with Earth? Ignore air drag.

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Answer #1

The initial energy at the given altitude is equal to energy at the surface as per conservation of energy principle. We use this to find the required speed of the meteor.

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