Work It Out 2004 Quiz 2 Two Massless Bumper Boats Float With Negligible Friction

Work It Out! (2004, Quiz 2)

Two massless bumper boats float with negligible friction in a pool, and carry three children, 1 in boat 1 and two in boat 2. Each child has mass, M.

The boats are initially moving towards each other but Boat #1 has a speed of V and Boat #2 has a speed of 1.5V.

The boats collide head-on and afterwards Boat #2 is stopped.

  • – What is the speed of Boat #1 after the collision? ______
  • – Deduce the coefficient of restitution of this collision. e = ____
  • – What percentage of energy is lost during the collision? _____% 

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