UNITS AND FORMULA

Mass
Length
Time

Base Quantities

kilogram

Standard Unit of Mass

Meter

Standard unit of Length

Seconds

Standard unit of Time

Derived Quantities

Also referred as Secondary Quantities

Volume

Length Cubed ( l³ )

Mass Density

Mass divided by Volume ( m / l³ )

Velocity

Length divided by Time ( l / t )

Exposure

Absorbed Dose

Effective Dose

Radioactivity

Special Quantities

3.0 × 10⁸ m/s

Velocity of Light

V = D / T

Velocity Formula

A = V / T

Acceleration Formula

F = ma

Law of Force Formula

1 kg - m/s²

1 N = _____________

1 g - cm/s²

1 Dyne = _____________

W_t = mg

Weight Formula

p = mv

Momentum Formula

W = Fd

Work Formula

P = W / t

Power Formula

½ mv²

Kinetic Energy Formula

PE = mgh

Potential Energy Formula

Joule (J)

Unit of Energy and Work

Joule/Second
Watt (W)

SI Unit of Power

Horsepower (hp)

British Unit of Power

9.8 m/s²

Gravity on Earth

1.6 m/s²

Gravity on Moon