Find Final Speed of 5MeV Protons in m/s

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The discussion centers on calculating the final speed of protons accelerated from a 20MV potential to a region of 0 potential, with a specific focus on the 5MeV energy level. Participants express confusion over the relevance of electron data and question why the protons only achieve 5MeV instead of 20MeV. There is uncertainty about the correct approach to the problem, with some suggesting it may be an error in the homework statement. Clarification from a teacher indicated that the problem may indeed contain inaccuracies. The conversation highlights the challenges faced when interpreting physics problems involving particle acceleration.
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Homework Statement



Protons from a Van de Graaff accelerator are released from rest at a potential of 20MV and travel through a vacuum to a region of 0 potential.
Charge of electron is 1.6x10^-19C and mass of electron is 1.67x10^-27kg
Find the final speed of the 5MeV protons
Answer in units of m/s

Homework Equations



eV=U=-.5mv^2
maybe some others. I am not sure

The Attempt at a Solution



To be honest I have no idea where to even start. I am not sure why they give me info on electrons then ask about protons. I just need a starting point

Thanks for any help
 
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I think they simply screwed up and meant to give you the data on protons. It's also interesting why traveling through a 20MV potential difference would give the protons 5MeV. Shouldn't it be 20MeV?
 
Yeah i talked to my teacher to day and she said it was a screw up.
Thanks though
 

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