Worksheet to get your learn onName:______

Ch. 5 Momentum

Be sure to underline important words and numbers!!!

  1. Come up with at least 4 things that have different masses and velocities (such as a car in the parking lot vs. a ninth grader running). Then compare their momentums.
  1. What makes impulse different than impact force?
  1. How is impulse related to momentum?
  1. Explain why a rifle recoils less than a bullet moves forward.
  1. Explain what would happen if a gun was lighter than the bullet it was shooting.
  1. Give 3 examples of increasing the time and decreasing the force in our everyday world (that are not mentioned in the book or in class…be creative.)
  1. What should you do if you are getting out of the way of a heavy, moving object but can’t get out of the way? How should you stop the object?
  1. How can a roller skate have more force than a rolling car in neutral if they are moving at the same velocity?
  1. What is the momentum of a 4 kg object that is moving at 5 m/s? Show all work and units.
  1. An 3 kg object has a momentum of 30 kg m/s. How fast is it moving? Show work and units.
  1. What is the stopping force of the object above if you stop it in 6 seconds? Show work and units.
  1. What is the stopping time of the object if you exert 15 N of force?
  1. An astronaut is floating in space and throws a rock that weighs less than him. How does his recoil compare to the speed of the rock? Why?
  1. If two pieces of putty of the same mass are moving toward each other with the same speed, what will be their speed when they hit each other and stick? What kind of collision is this?
  1. If one object weighs twice as much as another and they are moving at each other and the heavier object is moving half as fast as the lighter one….and they hit in an inelastic collision…what will be their combined velocity?