What is Force? INV #1

12345678
Across
  1. 3. the sum of all forces acting on a mass
  2. 5. an instrument used to measure force
  3. 8. the standard unit for measuring force
Down
  1. 1. Energy of motion
  2. 2. to act on and be acted upon by one or more objects
  3. 4. a force acting between two surfaces in contact
  4. 6. the ability to apply force over a distance
  5. 7. a push or pull