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  • A 5-kg fish swallows an absentminded 1-kg fish swimming towards it at a velocity that brings both fish to a halt immediately after lunch. What is the velocity of the smaller fish before it becomes lunch?
  • Use the concepts of this chapter to describe what would happen if you fire a gun that has bullet ten times as massive as the gun. 
  • An apple falls from a tree and strikes the ground without bouncing. What happens to its momentum? Is momentum conserved?
  • You and your friend toss a ball back and forth in the middle aisle of an airplane in flight. Does the kinetic energy of the ball depend on the speed of the airplane?
  • While standing on a skateboard you throw a 10 lb. bowling ball to the right with a velocity of 1 m/s. What happens next? Do you move to the right, left, or stay still? If you are moving how fast are you moving? Hint: You will need to supply your mass.
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