# Science Formulae

Weight = mass x gravitational acceleration
Mass = (kg)

Dencity = Mass/Volume

Volume = height x area

Pressure = (Pa or nm⁻²)

Pressure Solid (P)= Force (F) / Area (A)

Pressure Liquid = h x ρ x g
h=height
ρ = Density
g = gravitational acceleration
*Example: – 2m x 1000Kg m⁻³ x 10ms⁻²

1Kg=10N
10N=1Kg
Kgxg=N (g=10ms⁻²)

400N=40G

Work done = force x distance moved
Work done = force x displacement
Work done = fxd (fd)

Work done = mxgxh (mgh)
Work done = mass of the object x gravitational acceleration x vertical distance lifted

Work done = Weight of the object x vertical distance lifted
Work done = Wxh
1J = 1Nm

Work done (J)= Power (W) x Time (S)
Power (W)= work done (J) / time spent (S)
Time spent (s) = Work done (J) / Power (W)

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