Vocabulary #1 (Newton's Laws)

1. Force: push or pull exerted by an object on another.

2. Friction: a force taht opposes the motion of an object in contact with surface.

3. Drag force: a force that opposes the motion through liquids and gases.

4. Gravity: a force of attraction that exists between all objects with mass.

5. Net force: the combined effect of all the forces acting on an object.

6. Balanced forces. forces that cancel each other when acting on a single object.

7. Unbalanced forces: forces that do not cancel each other when acting on a single object.

8. Inertia: the tendency of an object to oppose a change in motion.

9. Momentum: the mass of an object multiplied by its velocity.