Three billiard balls, all having a mass of 0.170 kg, collide on a horizontal, table. Prior to the collision the red ball is traveling to the right at 1.50 m/s, the green ball is traveling ‘upwards and left’ (45o) at 1.20 m/s, and the yellow ball is traveling ‘downwards’ (90o) towards the crash site at 2.0 m/s. After the collision, both the red and yellow balls are stopped, and the green ball goes off at some velocity. Draw the before and after sketches of this collision scenario. Define your coordinate system. Show how to determine the final velocity, speed, and direction of the green ball immediately after the collision. Show how to determine the change in the kinetic energy of this system. Explain where this energy came from or went.
As this collision was inelastic, the loss in kinetic energy went in keeping at rest the other two balls after collision.
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