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2. A proton traveling a 4 m/s to the right collides into a stationary proton. The initially stationary proton
moves at an angle 02
60° wrt the x-axis after the collision. Assume that the collision was elastic. What
are the final speeds of each of the protons? (Keep your answers exact, no decimals)
y
V2f
m2
m1
Vli
vif

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