16 terms

# Newton's 1st Law - Conceptual Physics

#### Terms in this set (...)

equilibrium
The state of a body in which no net force acts on it
force
An influence that tends to accelerate an object; a push or pull. A vector quantity.
friction
The force that acts to resist the relative motion (or attempted motion) of objects or materials that are in contact.
inertia
The reluctance of a body to change its state of motion.
kilogram
The fundamental SI unit of mass.
Newton's 1st Law
Every body continues in its state of rest, or of motion in a straight line at constant speed, unless it is compelled to change that state by a net force exerted upon it.
mass
A measure of an object's inertia; also a measure of the amount of matter in an object. Depends only on the amount and kind of particles that compose an object - not on its location.
net force
The combination of all the forces that act on an object.
Newton
SI unit of force. The force applied to a 1 kilogram mass that will produce an acceleration of one meter per second per second.
normal force
For an object resting on a horizontal surface, the upward force that balances the weight of the object; also called the support force.
support force
Usually referred to as the "Normal Force" in physics
weight
The force on a body due to the gravitational attraction of another body (commonly Earth)
Law of Inertia
Same as Newton's 1st Law
Aristotle
Greek philosopher: Natural (up & down) and Violent Motion (side to side)
Copernicus
Polish astronomer who produced a workable model of the solar system with the sun in the center
Galileo
This scientist formulated the experimental method and using this, came up with the law of inertia, among several discoveries related to the moon

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