How Do You Apply Lorentz Transformation to High-Speed Situations?

[athrun200]

Homework Statement

[Removed over-sized images. Hoot][/color]

Homework Equations

3. The Attempt at a Solution [/b

In traditional way, we need to find velocity first, then use s=vt and done.
But this time, it moves in high speed, it seems it doesn't work.
So what can I do this time?

 

[dingo_d]

Well, have you tried applying the Lorentz transformations?

 

[athrun200]

We need to know the speed to apply Lorentz transformation.
Isn't it?

 

[Hootenanny]

We need to know the speed to apply Lorentz transformation.
Isn't it?

Indeed you do. You can work out the speed of the proton with the information given (total energy and rest energy).