18 terms

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

Force

any push or pull of an object; a vector quantity measured in newtons. Unbalanced force changes an object's motion.

Net Force

The vector sum of all 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

any quantity that has both magnitude and direction. (force, acceleration, velocity)

Scalar Quantity

any quantity that is described only by magnitude, not direction. (mass, volume, time)

Mechanical Equilibrium

when the net force on something is zero. (A state where no physical changes occurs.)

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.

Static Equilibrium

Objects at rest.

Dynamic Equilibrium

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

Inertia

Property of things to resist changes in motion

Newton's First law of motion

Every object stays at rest unless or in speed of a straight line unless acted by another object.

natural motion

proceeds from nature using the 5 elements

((Aristotle))

((Aristotle))

violent motion

pushing or pulling forces

((Aristotle))

((Aristotle))

resultant

the sum (net result) of 2 or more vectors

equilibrium

state of no change