1.
— The tendency of an object to resist changes in its motion.
2.
— A push or pull acting on an object.
3.
— A change in an object’s position over time.
4.
— A change in velocity caused by a net force.
5.
— A force applied by one object onto another.
6.
— The equal and opposite force returned by the second object.
7.
— Forces that are equal in size and opposite in direction; motion does not change.
8.
— Forces that are not equal; they cause a change in motion.
9.
— Acting in reverse direction.
10.
— Having the same magnitude or amount.
11.
— The amount of matter in an object.
12.
— Speed in a given direction.
13.
— A force that resists motion between surfaces.
14.
— The force that attracts objects toward one another, especially toward Earth.
15.
— The scientist who formulated the three laws of motion.
