Newton's second law of motion
Describes the acceleration of an object in the direction of the net force applied to it
The force that opposes motion between two surfaces that are touching each other.
Force exerted by every object in the universe on every other object. The amount of force depends on the masses of the objects and the distance between them.
Acceleration toward the center of a circle by an object moving along a circular path
The force that causes an object moving along a circular path to move toward the center of the path.
The measure of the force of gravity of an object.
Newton's third law of motion
Describes action-reaction pairs; for every action force, there is an equal and opposite reaction force.
A property of any moving object; the product of an object's mass and velocity.