17 terms

mdeodenePLUS

Conceptual Physics 10th e. by Paul G. Hewitt
Summary of Terms, Summary of Formulas, and Terms Within the Textbook

Force

An influence that tends to accelerate an object; a push or pull; measure in newtons. A vector quantity. State of motion: at rest, or moving in a uniformly line.

Net Force

The combination of all the forces that act on an object.

Vector

An arrow whose length represents the magnitude of a quantity and whose direction represents the direction of the quantity.

Vector Quantity

A quantity in physics, such as force, that has both magnitude and direction.

Scalar Quantity

A quantity in physics, such as mass, volume, and time, that can be completely specified by its magnitude, and has no direction. Can be added, subtracted, multiplied, and divided like ordinary numbers.

Mechanical Equilibrium

A state wherein no physical changes occur.

Equilibrium Rule

For any body in mechanical equilibrium, the vector sum of the forces on it are zero- that is, ∑F=0.

Support Force

Force that completely balances the weight of an object at rest.

Tension

Is the upward force action on a suspended object. (Stretching force).

Weight

Is the downward force caused by gravitational pull.

Support Force

(Normal Force) Upward Force.

Net Force

ZERO.

Static Equilibrium

Objects at rest.

Dynamic Equilibrium

Objects moving at constant speed in a straight-line path.

Scalar

Time, Area, Volume

Vector

Force

resultant

the sum of two or more vectors.