forces and motion

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Across
  1. 1. rate of change of velocity over time
  2. 4. international unit of measure for force
  3. 11. change in position overtime
  4. 12. Two unequal forces causing a change
  5. 14. a force that keeps an object at rest.
  6. 15. speed with direction
  7. 16. Object at rest stay at rest until acted upon
  8. 18. A force that resists the motion of two surfaces that are touching
  9. 19. distance over time
Down
  1. 2. F=m x a
  2. 3. the friction between layers of a viscous fluid that are moving relative to each other
  3. 5. type of friction that occurs when a wheel, ball, or cylinder rolls freely over a surface.
  4. 6. Two equal forces acting in opposite
  5. 7. Force vary action there is an equal and opposite reaction
  6. 8. mass in motion must times velocity
  7. 9. is an attractive force that exists between all objects that have mass
  8. 10. a property of matter by which it remains at rest or in unchanging motion unless acted on by some external force.
  9. 13. A push or a pull
  10. 17. the combined effect (the sum) of all the pushing and pulling forces actually acting on the object.
  11. 20. where someone or something is located