Measuring Force
Force is measured in newton, symbol N, which is the SI unit of force.
Practice This ConceptMain explanation
Teacher explanation
A force can be compared by the change it produces in motion or shape. In school physics, one newton is the force that gives a mass of 1 kg an acceleration of 1 m/s².
Example
If a 2 kg object accelerates at 3 m/s², the force on it is 6 N using F = ma.
Simple analogy
Force unit is N because Newton's law gives F = ma.
Common confusion
Students sometimes write kg as the unit of force, but kg is a unit of mass, not force.
Exam tip
Always write the unit as N after calculating force, and keep mass in kg and acceleration in m/s².
Answer writing and exam use
1-mark use
Write the exact meaning of measuring force in one clean line.
2-mark use
Define measuring force and add one example or condition.
3-mark use
Explain measuring force, show the method or example, and mention the common mistake.
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