- #1
air4ce
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Homework Statement
A cue ball traveling @ 4m/s makes a glancing elastic collision with a target ball of equal bass that is initially at rest. The cue ball is deflected @an angle of 30°. Find the angle between the two velocity vectors; and the speeds of the two balls post collision.
Homework Equations
[tex] KE= 1/2mv^2 \\
P=mv
[/tex]
The Attempt at a Solution
[itex] m_1=m_2 \\
m_1*v_1=m_1*v_{1f} + m_1*v_{2f} \\
v_{1f}=4-v_{2f}
[/itex]
Stuck here. I know I have to use Kinetic Energy, but how?