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Conceptual Physics Chapter 2: Newton's First Law of Motion-Inertia
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Conceptual Physics 12th e. by Paul G. Hewitt Summary of Terms, Summary of Formulas, and Terms Within the Textbook
Terms in this set (17)
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 vector sum of forces that act on an object.
Vector
An arrow drawn to scale used to represent a vector 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 has a magnitude but no direction. Can be added, subtracted, multiplied, and divided like ordinary numbers.
Mechanical Equilibrium
A state of an object or system of objects for which there are no changes in motion. In accord with Newtons first law, if an object is at rest the state of rest persists. If an object is moving, its motion continues without change.
Equilibrium Rule
For any body in mechanical equilibrium, the vector sum of the forces on it are zero- that is, ∑F=0.
Inertia
The property of thins to resist changes in motion.
Newtons first law of motion (the law of inertia)
Every object continues in a state of rest or of uniform speed in a straight line unless acted upon by a nonzero net force.
Resultant
The net result of a combination of two or more vectors.
Inertia
The tendency of an object to resist changes in motion.
Tension
Stretching force
Support Force
The upward force exerted on an object. Also known as normal force.
Weight
The force due to gravity.
Static Equilibrium
An object is at rest is said to be in this state.
Dynamic Equilibrium
An object that is steadily moving in a straight line path is said to be in this state.
Component Vector
Vectors that add together, the sum of which is their resultant.
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