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danield
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Homework Statement
The question is the following:
A billiard ball at rest is truck by another ball of the same mass whose speed is 5.0m/s. After an elastic collision the striking ball goes off at an angle of 40 with respect to the original direction of motion and the struck ball goes off at an angle of 50 with respect to this direction. Find the velocity of both balls.
Homework Equations
Well i wasnt too sure about what to use but i was trying to use
KE= 1/2mv^2
m1v1 + m2v2 = m1v1f + m2v2f
also an equation for elastic colltions
v2f= 2m1v1
-------
(m1 + m2)
The Attempt at a Solution
I tryed using all those equations, but when i got to the point of solving by vectors..well by the angle. it was impossible for me to solve it...
any help or guiding on how to resolve this kind of problems with angles.. will be appreciated.. thx
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