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- Homework Statement
- Show that, in the case of an elastic collision of a particle of

mass m1 with a particle of mass m2 , initially at rest, (a) the

maximum angle m through which m1 can be deflected by the

collision is given by cos^2(theta) = 1 - (m2/m1)^2 so that

0 is less than or equal to theta which is less than or equal to pi/2 and when when m1 < m2.

- Relevant Equations
- v1f = ((m1-m2)/(m1+m2))*(v1i)

v of center of mass reference frame = (m1v1i + m2v2i)/(m1+m2)

I started by writing the equation v1i + v1f = 2v and then drawing a triangle with v1i, v1f, and 2v as the three sides. Then I used the Law of Cosines to solve for cos theta but this did not lead to a solution. Could I have a hint on how to begin? Thank you!