(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

An electron's position is given by r(t)=r(0)+c1*t, θ(t)=θ(0)+c2*t, where r(0), c1, θ(0), and c2 are known constants. What is the kinetic energy of the electron? (mass=m)

2. Relevant equations

KE=(1/2)Iω^{2}=(1/2)mr^{2}ω^{2}

3. The attempt at a solution

plugging in m for mass, r(0)+c1*t for radius, and c2 for ω

(1/2)(m)(r(0)+c1*t)^{2}(c2)^{2}

This isn't the correct answer, so I'm fairly certain I've messed up on my "r" value somehow.

It's supposed to equal (1/2)(m)(c1^{2}+r^{2}c2^{2})

Where am I going wrong?

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# Homework Help: Finding the kinetic energy of an electron

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