Forces and Momentum

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Across
  1. 4. When a crash stops a car, impulse is needed to bring the driver's momentum to ----.
  2. 5. Momentum of any closed isolated system does not -----
  3. 6. Kinetic Energy, Mass,
  4. 8. Initial momentum subtracted from final momentum (First two letters are abbreviations)
  5. 10. When an object is -----, the impulse is the product of force and time interval
  6. 11. When two balls of different size and velocity hit, their force on eachother is the same and ----
Down
  1. 1. the product of the average force on an object and the time interval over which it acts
  2. 2. Momentum,Impulse,Velocity
  3. 3. the product of the objects's mass an velocity
  4. 7. System that does not gain or lose mass
  5. 8. When the net external force on a close system is zero the system is an ---- system
  6. 9. Large change in momentum = ---- impulse