17 terms

Conceptual Physics--Chapter 2: Newton's First Law of Motion--Inertia

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