A 0.50-kg ball that is traveling at 6.0 m/s collides head-on with a 1.00-kg ball

Question

A 0.50-kg ball that is traveling at 6.0 m/s collides head-on with a 1.00-kg ball moving in the opposite direction at a speed of 12.0 m/s. The 0.50-kg ball bounces backward at 14 m/s after the collision. Find the speed of the second ball after the collision.

Carmen and Judi dock a canoe. 85.0-kg Carmen moves forward at 4.7 m/s as she leaves the canoe to step onto the dock. At what speed and in what direction do the canoe and Judi move if their combined mass is 115 kg? (Use a positive number if the canoe moves away from Judi.)

Explanation / Answer

     ( considerthe direction of motion of mass m1 is positive )

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