newtons three laws

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Across
  1. 4. Forces Forces that are equal in size and in opposite direction
  2. 5. Friction Friction between moving surfaces
  3. 7. Force that makes motion more difficult between to materials that are in contact because of microscopic hills and valleys on the surfaces of the objects
  4. 9. f
  5. 12. Friction Friction between objects that result in no motion
  6. 13. first law of motion explains that an objects motion at a constant speed maintains that speed unless another force acts on it
  7. 15. m
Down
  1. 1. force = mass * accelleration
  2. 2. Force of attraction between objects
  3. 3. a
  4. 6. Measurement of the force that gravity pulls on an object
  5. 8. second law explains that the force acting on an object causes the object to speed up in the direction of the force
  6. 9. Push or pull one object exerts on another
  7. 10. is the tendency of an object to resist any change in its motion
  8. 11. Force Combination of all forces acting on an object
  9. 14. Isaac Newton stated laws that describe the effects of forces on motion