vocab

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Across
  1. 2. strength or energy as an attribute of physical action or movement.
  2. 5. the resistance that one surface or object encounters when moving over another.
  3. 6. means the force (F) acting on an object is equal to the mass (m) of an object times its acceleration (a)
  4. 7. one that causes a change in the motion of the object to which the force is applied.
  5. 9. increase in the rate or speed of something.
  6. 10. to remain unchanged
Down
  1. 1. all forces occur in pairs such that if one object exerts a force on another object, then the second object exerts an equal and opposite reaction force on the first.
  2. 3. two forces acting in opposite directions
  3. 4. the SI unit of force. It is equal to the force that would give a mass of one kilogram an acceleration of one meter per second per second, and is equivalent to 100,000 dynes.
  4. 8. the vector sum of forces acting on a particle or body.