Equations Flashcards by Edward Disken

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 transferred by device / total energy supplied to device

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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

Wave speed=

A

distance / time

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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 gravitational potential energy=

A

mass x gravitational field strength x change in vertical height

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Q

Kinetic energy=

A

1/2 x mass x (speed)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=

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A

current x resistance

Q

Power=

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A

energy transferred / time taken

Q

Electrical power=

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A

current x potential difference

Q

Electrical power=

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A

current squared x resistance

Q

Force exerted on spring=

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A

spring constant x extension

Q

Moment of a force=

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A

force x distance normal to direction of force

Q

Pressure=

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A

force normal to surface / area of surface