Equations Flashcards by Evie Read

Q

Distance travelled=

A

Average speed x time

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Q

Acceleration=

A

Change in velocity/time taken

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Q

force=

A

Mass x acceleration

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Q

Weight=

A

Mass x gravitational field strength

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Q

Efficiency =

A

Useful energy/total energy

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Q

Momentum=

A

Mass x velocity

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Q

Wave speed=

A

Frequency x wavelength

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Q

Density =

A

Mass/volume

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Q

Work done=

A

Force x distance moved in direction of force

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Q

Change in GPE=

A

Mass x GFS x change in vertical height

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Q

Kinetic energy=

A

0.5 x mass x V(2)

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Q

Power=

A

Work done/time taken

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Q

Energy transferred=

A

Charge moved x potential difference

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Q

Charge=

A

Current x time

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Q

Potential difference=

A

Current x resistance

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Q

Power=

A

Energy transferred /time taken

Q

Electrical power (1) =

A

Current x potential difference

Q

Electrical power (2)=

A

Current (2) x resistance

Q

Force exerted on spring=

A

Spring constant x extension

Q

Moment of force=

A

Force x distance normal to the direction of force

Q

Pressure=

A

Force normal/area of that surface