Formula Need To Learn Flashcards

1
Q

Kinetic energy

A

1/2 x mass x speed2

Ek=1/2 x m x v2

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2
Q

Gravitational potential energy

A

GPE=mass x gravitational field strength x height

Ep=mgh

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3
Q

Power

A

Power=work done/time taken

P=W/T

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4
Q

Efficiency

A

Efficiency= useful energy output/total energy output

Useful power output/total power output

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5
Q

Density

A

Mass/volume

P=m/v

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6
Q

Weight

A

Weight= mass x gravitational field strength

W=mg

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7
Q

Work done

A

Force x distance

W=Fs

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8
Q

Force

A

Spring constant x extension

F=ke

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9
Q

Moment of a force

A

Force x distance

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10
Q

Pressure

A

Force normal to surface/ area of surface

P=F/A

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11
Q

Distnace travlled

A

Speed x time

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12
Q

Acceleration

A

Change in velocity/ time taken

Final velocity-initial velocity/time taken

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13
Q

Resultant force

A

Mass x acceleration

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14
Q

Momentum

A

Mass x velocity

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15
Q

Wave speed

A

Frequency x wavelength

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