Homework Statement
A proton has mass 1.7×10−27 kg. What is the magnitude of the impulse required to increase its speed from 0.991c to 0.994c?
Homework Equations
Impulse = mV_f{}-mV_i{}
The Attempt at a Solution
Impulse = mV_f{}-mV_i{}
= 1.7e-27*(.994*3e8)-(1.7e-27*(.991*3e8))
=...
oh ok i got it. you can't add those two together because one is a momentum vector and the other is a net force. so the change of direction would be just in the direction that the force was applied
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