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## Homework Statement

particle of mass m1 collides with particle m2 at rest. The out come of the reaction were m3 and m4 which leave the collision at angles 3 and angle 4 withthe original path. find the energy of the reaction Q in terms of the masses and angles and p1

## Homework Equations

x-direction p1=p3cos(theata3)+p4cos(theata4)

y-direction 0=p3sin(theata3)-p4sin(theata4)

T1+Q=T3+T4

T1=p1^2/2m1

T3=p3^2/2m3

## The Attempt at a Solution

BY eliminating theata 4 by sequaring and adding x and y equations the out come where

P4^2=P1^2+P3^2-2P1P3COS(theata3)

so Q=p3^2/2m3+p4^2/2m4-p1^2/2m1

but I couldnt find the Q with respect to angles and only p1 can any one help be