equal forces acting on an object in opposite directions

forces that produce a nonzero net force, which changes an object's motion

a push or pull on an object

the overall force on an object after the forces are added together

Change in an object's motion; caused by an unbalanced force

The tendency of an object to resist a change in motion unless acted on by an unbalanced force

When an object has a constant mass and is acted on by a force, the object will accelerate in the same direction the force is applied

For every action, there is an equal and opposite reaction

the units used for force

Movement of an object that is created by the application of a force.

Is the force usually exerted by a surface on an object that is resisting against it.

friction that occurs as an object moves through a fluid

friction that occurs when an object rolls over a surface

friction that occurs when one solid surface slides over another

friction that acts on objects that are not moving

the tendency of an object to resist a change in motion

the force that two surfaces exert on each other when the two rub against each other

a characteristic of a moving object that depends on both the mass and the velocity of the object