- #1

sheri1987

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**Relationship of velocity of an electron/velocity of proton to...mass ratio**

## Homework Statement

An electron and a proton, starting from rest, are accelerated through an electric potential difference of the same magnitude. In the process, the electron acquires a speed ve, while the proton acquires a speed vp.

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(d) What is the algebraic expression for the ratio ve/vp of the speed of the electron to that of the proton? Express your answer in terms of the mass me of the electron and the mass mp of the proton. (Answer using m_e for me and m_p for mp.)

## Homework Equations

SO I need to write an equation relating Velocity of electron/ velocity of proton...I understand that much...but I am unsure where to start.

I think I need the equation 1/2mv^2 = -q (charge)deltaV(voltage)

## The Attempt at a Solution

by using the equation above I solved and got sqrt(2qdeltaV/m) ...I am not sure where to go next...? Can anyone help me out?