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Ap Physics

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Section 1

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Dynamics

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Physics

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Date created

Mar 1, 2020

Cards (22)

Section 1

(22 cards)

Dynamics

Front

The study of how forces affect the motion of objects and systems

Back

Force field

Front

A region in which a test particle will experience a force

Back

System

Front

Defined by the boundaries of an object or collection of objects being observed; all forces originating from outside of the system are considered external forces

Back

Tension

Front

The pulling force that acts along a medium, especially a stretched flexible connector, such as a top or cable; when a rope supports the weight of an object; the force on the object due to the rope is called a tension force

Back

Inertia

Front

The tendency of an object to remain at rest or remain in motion

Back

inertial frame of reference

Front

A coordinate system that is not accelerating; all force acting in an inertial frame of reference are real forces, as opposed to fictitious focus that are observed due to an acceleration frame of reference

Back

Mass

Front

The quantity of after in a substance; measured in kilograms

Back

Free-body diagram

Front

A sketch showing all of the external forces acting on object or system; the system is represented by a dot, and the forces are represented by vectors extending outward from the dot

Back

Weight

Front

The force (w) due to gravity acting on an object of mass (m); defined mathematical as; (w= mg), where (g) is the magnitude direction of the acceleration due to gravity

Back

Force

Front

A push or pull on an object wit a specific magnitude and direction; can be represented by vectors; can be expressed as a multiple of a standard force

Back

Free fall

Front

a situation in which the only force acting on an object is the force due to gravity

Back

Carrier particle

Front

a fundamental particle of nature that is surrounded by a characteristic force field; photons are carrier particles of the electromagnetic force

Back

Thrust

Front

A reaction force that pushes a body forward in response to a backward force; rockers, airplanes, and cars are pushed forward by a thrust reaction force

Back

Net external force

Front

The vector sum of all external forces acting on a n object or system, causes a mass to acceleration

Back

Newton's first law of motion

Front

In an inertial frame of reference, a body at rest remains at rest, or, if in motion, remain in motion at a constant velocity unless acted on by a net external force; also known as the law of inertia

Back

Friction

Front

A force past each other of objects that are touching; examples include rough surface and air resistance

Back

Acceleration

Front

The rate at which an objects velocity changes over a period of time

Back

Law of inertia

Front

See Newton's first law of motion

Back

Normal force

Front

The force that a surface applies to an object to support the weight of the object; acts perpendicular to the surface on which the object rests.

Back

External Force

Front

A force acting on an object or system that originates outside of the object or system

Back

Newton's second law of motion

Front

The net external force (f net)on an object with mass (m) is proportional to and in the same direction as the acceleration of the object (a) and inversely proportional to the mass; defined mathmatically as (a = fnet/m)

Back

Newton's third law of motion

Front

Whenever one body exerts a force on a second body, the first body experiences a force that is equal in magnitude and opposite in direction to the force that the first body exerts

Back