Physical Science Vocabulary

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Across
  1. 3. the amount of "stuff" in an object
  2. 6. a force that opposes motion between two surfaces that are in contact
  3. 7. force combination of all forces
  4. 8. the rate at which velocity changes over time; an object accelerates if its speed, direction, or both change
  5. 9. a British scientist who described the relationship between motion and force in three laws
Down
  1. 1. the tendency of an object at rest to remain at rest or, if moving, to continue moving at a constant velocity
  2. 2. force forces that are not equal on either side of an object
  3. 4. bag releases quickly to protect a human's head and upper body when in a car crash
  4. 5. velocity equal speed and direction of an object over equal amounts of time
  5. 6. the amount of energy exerted on an object