What Is the Speed of a Proton Between Two Plates with a 60V Difference?

[Destrio]

1. The problem statement, all variables and 'given'/'known' data
A proton accelerates from rest from plate X to plate Y. If the potential difference between the 2 plates is 60.0V, what is the speed of the proton when it reaches plate Y?

2. Governing equations
V = E/q
Ekf - 1/2mv^2

The Attempt at a Solution

E = (60V)(1.6x10^-19C)
E = 9.6x10^-18 V/m

Ekf = 1/2mv^2
9.6E-18 J = 1/2(9.11x10^-31kg)v^2EDIT: added units

And when I solve for v my answer is not correct. So I'm making a mistake somewhere.

Thanks

 

[berkeman]

Good job posting the question. I'm having trouble checking your work because units are not shown throughout. Could you please include units on things like the 1.6x10^-19 term, etc.? Thanks.

 

[Destrio]

added units
thanks

 

[neutrino]

The mass of a proton is not 9.11e-31 Kg!

 

[Destrio]

Oh dear, how could I mix that up.

I did it as an electron...

Problem solved, thanks