This document lists the key units to remember when taking the P2 exam, including meters per second for speed and velocity, seconds for time, newtons for weight and force, joules for work, energy and power, ohms for resistance, and includes the symbols for common Greek letters used in physics equations.

1. Units to remember when doing the P2 exam:
 Speed: m/s
 Velocity: m/s
 Distance: M
 Time: s (seconds)
 Acceleration: m/s2
(metres per second2
)
 Weight: N (Newtons)
 Mass: Kg (Kilograms)
 Gravitational field strength: N/Kg
 Resultant force: N (Newtons)
 Work done: J (Joules)
 Gravitational potential energy: J (Joules)
 Kinetic energy: J (Joules)
 Spring constant (K): N/m
 Extention (e): m
 Power: W (Watts)
 Momentum: Kgm/s
 Current: A (Amperes)
 Charge: C (Coulombs)
 Potential difference: V (Volts)
 Resistance: Ω (Ohms)
 Frequency: Hz (Hertz)
Alpha: α
Beta:β , ҽ
Gamma: γ