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A ball of mass 2.00 kg, resting on a horizontal frictionless surface, gets hit by another...

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Physics

A ball of mass 2.00 kg, resting on a horizontal frictionlesssurface, gets hit by another ball of mass 1.50 kg moving in the+x-direction with a speed 4.00 m/s. After the collision, the 1.50kg ball has a speed of 2.00 m/s at an angle 60.0° counterclockwisefrom the +x-direction.

  1. a) Find the velocity of the 2.00 kg ball just after thecollision. Express your answer in vector form.

  2. b) Compute the percent of kinetic energy lost in thecollision.

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