science formula

     

Basic Units & Measurement Formulas

Quantity	Formula	SI Unit
Speed / Velocity	$\text{Speed} = \frac{\text{Distance}}{\text{Time}}$	m/s
Acceleration	$\text{Acceleration} = \frac{\text{Change in Velocity}}{\text{Time}}$	m/s²
Force	$F = m \cdot a$	Newton (N)
Pressure	$P = \frac{F}{A}$	Pascal (Pa) = N/m²
Work Done	$W = F \cdot d \cdot \cos \theta$	Joule (J)
Power	$P = \frac{W}{t}$	Watt (W)
Energy	$E = P \cdot t$	Joule (J)
Density	$\rho = \frac{m}{V}$	kg/m³
Momentum	$p = m \cdot v$	kg·m/s
Kinetic Energy	$KE = \frac{1}{2}mv^2$	Joule (J)
Potential Energy	$PE = mgh$	Joule (J)
Frequency	$f = \frac{1}{T}$	Hertz (Hz)
Voltage	$V = I \cdot R$	Volt (V)
Electric Power	$P = V \cdot I$	Watt (W)
Charge	$Q = I \cdot t$	Coulomb (C)
Resistance	$R = \frac{V}{I}$	Ohm (Ω)

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📐 Measurement Units Table (SI Base Units)

Physical Quantity	Unit	Symbol
Length	meter	m
Mass	kilogram	kg
Time	second	s
Electric current	ampere	A
Temperature	kelvin	K
Luminous intensity	candela	cd
Amount of substance	mole	mol

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📊 Conversion Examples

From → To	Multiply By
1 km → m	× 1000
1 m → cm	× 100
1 cm³ → m³	× $10^{-6}$
1 g/cm³ → kg/m³	× 1000
1 kW → W	× 1000
1 hp → kW	× 0.746