An atom (m = 19.0 u) makes a perfectly elastic collision with another atom at rest. After the impact, the atom travels away a
a 52.9° angle from its original direction and the unknown atom travels away at a −50.0° angle. What is the mass (in u) of th
Conservation of Momemtum
Law of Sines
The Attempt at a Solution
Atom A is the m_a=19 u...
m_a*v_a,i=m_a*v_a,f + m_b*v_b,f
Draw triangle, use law of sines...
4 eqns (bottom one can be seperated into 3 eqns correct?), 4 unknowns (m_b, v_a,i, v_a,f, and v_b,f)
Tried to solve in my TI-89 and it did not work (note I'm not in radian mode or anything stupid)