forces and motion

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