Force and Motion Vocabulary

5. Resistance The force of air pushing against the motion of an object moving through it.
8. 1st Law of Motion An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an external force.
9. The amount of matter in an object, typically measured in kilograms.
10. Force The inward force required to keep an object moving in a circular path.
12. Force Forces acting on an object that are equal in magnitude and opposite in direction, resulting in no change in motion.
14. The rate of change of velocity over time.
16. The quantity of motion an object has, calculated as the product of its mass and velocity p=mv

1. 3rd Law of Motion For every action, there is an equal and opposite reaction.
2. The force of attraction between two masses, particularly the force that pulls objects toward the center of the Earth.
3. Force Forces that are not equal, causing an object to accelerate or change its motion.
4. Fall The motion of an object when it is falling solely under the influence of gravity.
6. The tendency of an object to resist changes in its state of motion.
7. The force that opposes the motion of an object when it comes in contact with a surface.
8. 2nd Law of Motion The acceleration of an object depends on the net force acting on it and its mass, expressed as F=ma (force equals mass times acceleration).
11. A push or pull acting on an object, measured in newtons (N).
13. The force of gravity acting on an object's mass.
15. The speed of an object in a specific direction.