At an amusement park, Keenan is in a 96.0 kg bumper car moving to the right at a speed of 3.50 m/s. He collides with his friends who are in a 135 kg bumper that is at rest. Keenan bounces backward at a speed of 1.25 m/s. a. What is the new velocity (magnitude and direction) of his friends? b. Calculate if kinetic energy is conserved during this collision.

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