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22 Cards in this Set

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  • Back
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Weight

Mass × gravitational field strength

W=mg

Work done

Force × distance

W=Fs

Force applied to a spring

Spring constant × extension

F=ke

Moment of force

Force x distance

M=Fd

Pressure

Force normal to surface (÷)


Area of that surface

P=F/A

Distance travelled

Speed × time

S=vt

Acceleration

Change in velocity


Time taken

a=v/t

Resultant force

Mass × acceleration

F=ma

Momentum

Mass × velocity

p=mv

Kinetic energy

0.5 × mass ×( speed)2



*squared

Ek= 1/2 mv2

Gravitational potential energy

Mass × gravitational field strength × height

Ep = mgh

Power

Energy transferred ÷ time

P= E/t

Power (in terms if work)

Work done ÷ time

P= W/ t

Efficiency

Useful power output ÷ useful input energy transfer



Useful power output ÷ total power output

Energy


Power

Wave speed

Frequency × wavelength

Charge flow

Current × times

Q=It

Power

Potential difference × current

P= VI

Power

(Current)2 × resistance


*squared

P=I2×R

Potential difference

Current × resistance

V= IR

Energy transferred

Power × time

E= Pt

Energy transferred

Charge flow × potential difference

E=QV

Density

Mass÷ volume

p= m/v