3 ms·

If the gamma is expressed in terms of velocity, wouldn't that suggest that the momentum isn't exactly proportional to velocity? Because otherwise you could say

by drdeca 11y ago

If the gamma is expressed in terms of velocity, wouldn't that suggest that the momentum isn't exactly proportional to velocity? Because otherwise you could say anything is proportional to velocity, but with another term which counteracts that factor? Also, I thought the view was shifting to using rest mass instead of relativistic mass but I might have that backwards.

pdonis 11y ago
> If the gamma is expressed in terms of velocity, wouldn't that suggest that the momentum isn't exactly proportional to velocity? Yes. At ultrarelativistic velocities, momentum can change a lot for a very, very small change in velocity, so the behavior is highly nonlinear.