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