Acceleration

Acceleration of free fall

Air resistance

Ammeter

Ampere

Amplitude (waves)

Angle of incidence

Angle of reflection

Anion

Anode

Antiparallel (vectors)

Antiphase

Archimedes' principle

Average speed

Average velocity

Base unit

Battery

Braking distance

Breaking strength

Brittle

Capacitor

Cathode

Cation

Cell

Centre of gravity

Centre of mass

Charge carrier

Closed system

Coherence

Component (vectors)

Compression

Compression (waves)

Compressive deformation

Compressive force

Conservation of charge

Constant speed

Constant velocity

Constructive interference

Conventional current