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SalsaOnMyTaco
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Homework Statement
A ball of mass m = 1.9 kg moving with a speed of v0 = 20.1 m/s strikes an identical ball which was initially at rest. After the collision, the incoming ball (ball 1) goes off at q1 = 26° relative to its original direction and the struck ball (ball 2) moves off at q2 = 36° as shown in the diagram.
What magnitude of kinetic energy was lost (to sound, heat, etc.) in the collision?
Homework Equations
ΔKf-ΔKi
The Attempt at a Solution
The final velocity of the billiard balls came up to be ball 1= 13.29 m/s and ball 2= 9.92 m/s
so...ΔK= 1/2 m(13.292+9.922)-1/2m(20.12)
m=1.9
am i doing this right?