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Physics Study Guide Flashcards
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36
Physics
8th Grade
03/10/2022

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Term
Force
Definition
A push or pull exerted on an object.
Term
Net Force
Definition
The overall force on an object when all the individual forces acting on it are added together.
Term
Unbalanced Forces
Definition
Forces that produce a nonzero net force, which changes an object's motion.
Term
Balanced Forces
Definition
Equal forces acting on an object in opposite directions.
Term
Newton
Definition
A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second per second.
Term
Contact Forces
Definition
An force that requires contact to occur.
Term
Applied Force
Definition
A force that is applied to an object by a person or another object.
Term
Normal Force
Definition
The support for exerted upon an object that is in contact with another stable object.
Term
Tension Force
Definition
The force generated when a load is applied at one or more ends of a material in a directional away, normally to the cross section of a material.
Term
Spring Force
Definition
The force required or exerted to stretch or compress a string upon any object that is attached to it.
Term
Vectors
Definition
An object that has both a magnitude and a direction.
Term
Magnitude
Definition
Strength
Term
Friction
Definition
The force that one surface exerts on another when the two surfaces rub against each other.
Term
Static Friction
Definition
Friction that acts on objects that are not moving.
Term
Sliding Friction
Definition
Friction that occurs when one sliding surface slides across another.
Term
Rolling Friction
Definition
Friction that occurs when an object rolls over a surface.
Term
Fluid Friction
Definition
Friction that occurs as an object moves through a fluid.
Term
Gravity
Definition
The force that pulls objects towards another.
Term
Mass
Definition
The amount of matter in an object.
Term
Weight
Definition
The force of gravity on an object at the surface of a planet.
Term
Free Fall
Definition
Any motion of a body where gravity is the only force acting upon it.
Term
Air Resistance
Definition
The fluid friction experienced by objects falling through the air.
Term
Terminal Velocity
Definition
The greatest velocity a falling object can achieve.
Term
Projectile
Definition
An object that is thrown.
Term
Vacuum
Definition
A space devoid of matter.
Term
Newton's Second Law
Definition
The force of an object depends on it's mass and acceleration.
Term
Newton's First Law
Definition
An object in motion stays in motion, and an object at rest stays at rest.
Term
Inertia
Definition
An object's resistance to change.
Term
Force=
Definition
mass x acceleration
Term
Acceleration=
Definition
force/mass
Term
Mass=
Definition
force/acceleration
Term
Weight=
Definition
mass x gravity
Term
Newton's Third Law Of Motion
Definition
When two bodies interact they apply forces to one another that are equal in magnitude and opposite in direction.
Term
Momentum=
Definition
mass x velocity
Term
Mass=
Definition
momentum/velocity
Term
Velocity=
Definition
momentum/mass
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