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Definitions Flashcards

(23 cards)

1
Q

Energy

A

The ability to do work

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2
Q

Energy transfer

A

The movement of energy from one system to another

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3
Q

Energy transformation

A

the change of energy from one form to another

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4
Q

Mechanical work

A

the transfer of energy to or from an object by the action of a force over a distance

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5
Q

Kinetic energy

A

the energy from the movement of an object

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6
Q

Elastic potential energy

A

the energy stored in an object as a result of the extension or compression of an object

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7
Q

Gravitational potential energy

A

the energy stored in an object as the result of its position relative to another to which it is attracted by the force of gravity

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8
Q

Efficiency

A

the ratio of useful energy output to the total energy input in a physical process or system, expressed as a percentage

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9
Q

Law of Conservation of Energy

A

the total energy of a system remains constant; energy can only be transferred or transformed, but not created or destroyed

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10
Q

Distance

A

the total length of the pathway taken between an origin and a destination point

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11
Q

Displacement

A

the distance between an origin and destination point, irrespective of path

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12
Q

Speed

A

the rate of change of distance

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13
Q

Velocity

A

the rate of change of displacement

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14
Q

Acceleration

A

the rate of change of velocity

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15
Q

Inertia

A

the tendency of an object to maintain its state of motion

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16
Q

Force

A

A push or a pull

17
Q

Mass

A

a measure of the amount of matter an object contains

18
Q

Gravitational force

A

the force that attracts all objects to Earth

19
Q

Friction

A

the force that opposes the relative motion of surfaces sliding against each other

20
Q

Coefficient of friction

A

the ratio of frictional force to normal force for a particular pair of surfaces in contact

21
Q

Spring constant

A

the ratio of spring force to displacement for a particular spring

22
Q

Impulse

A

the change in momentum of an object

23
Q

Momentum

A

the product of an object’s mass and velocity