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Unformatted text preview: Which one? Again, note the negative velocity of B. We usually leave the after impact velocities as positive and just see how the math turns out. Combine the two components to get a final velocity and direction. Find beginning and end kinetic energies, then find percentage lost. Reflection: Note that the energy lost isnt just the e squared for this more complex impact. It also seems reasonable that A bounces back in the x direction, and B bounces in the + x direction. Given: Find: v A = 6 m/s, v B = 10 m/s, e= 0.75 v A and energy lost Problem type: Note we have made the assumption that no force acts in the y direction Note that 10 cos 30 = 8.66 t n...
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- Spring '05