Abilene Christian University Physics Momentum of Electron Problem

(a.) Consider an electron moving at a speed such that its kinetic energy is equal to its rest energy. How fast is it moving? Give your answer in terms of c, the speed of light, for example #c were # is a number.

(b.) A particular electron is moving very fast at a speed of 0.9 c. What is the momentum of this electron?

Prof. Angela

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