Chapter 1

The property by which objects resist changes in motion

The quantity of matter in an object. More specifically, it is the measure of the inertia or sluggishness that an object exhibits in response to any effort made to start it, stop it, deflect it, or change its state of motion in any way.

Simply stated, the force due to gravity on an object. More specifically, the gravitational force with which a body presses against a supporting surface.

The unit of mass. One kilogram (symbol kg) is the mass of 1 liter (L) of water at 4°C.

Simply stated, a push or a pull.

The Scientific unit of force

The combination of all forces that act on an object

A quantity that specifies direction as well as magnitude

The vector sum of forces acting on a nonaccelerating object equals zero:

The force that supports an object against gravity, often called the normal force.