Mathematics A-Level
S.I. units
What S.I. units means in Mathematics A-Level, as defined for Pearson Edexcel.
Definition of S.I. units
Check what you remember
Read the wording for your board, then hide it and explain S.I. units in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: Pearson Edexcel
The units to always use: weight in N, mass in kg, and g in m s⁻².
Topics that use S.I. units
- Forces and Newton’s laws (Pearson Edexcel A-Level)
Related terms
- coefficient of friction
- Dynamics in a plane
- Equilibrium
- force
- friction
- Gravitational acceleration
- inextensible string
- limiting equilibrium
Using S.I. units in the exam
Check the command word and mark scheme for your exact question. After comparing your explanation with the reference, use the term in an answer on the linked topic. This practice does not predict an exam mark.
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