1.1 Core mechanics units
Core mechanics units name the standard measurements for mass, distance, time, speed, acceleration, force and gravitational field strength in calculations.
- Syllabus
- 2024
- Objective
- 1.1
- Level
- —
1.1 Core mechanics units
Use the units kilogram (kg), metre (m), metre per second (m/s), metre per second squared (m/s²), newton (N), second (s) and newton per kilogram (N/kg).
Concept essentials
- Mass uses kilograms, while distance and time use metres and seconds as the base measurements for mechanics.
- Speed uses metres per second because it compares distance travelled with the time taken.
- Acceleration uses metres per second squared because it describes how velocity changes each second.
- Force uses newtons, and gravitational field strength uses newtons per kilogram.
ConceptIGCSE Physics