Mathematics A-Level
SI units and accuracy
What SI units and accuracy means in Mathematics A-Level, as defined for AQA.
Definition of SI units and accuracy
Check what you remember
Read the wording for your board, then hide it and explain SI units and accuracy in your own words. Rough notes are fine. This is a self-check, with no mark or grade.
Reference: AQA
In SI, g is measured in m s⁻²; use g = 9.8 or 9.81 as required, stating the value of g used and its direction.
Topics that use SI units and accuracy
- R: Forces and Newton’s laws (AQA A-Level)
Related terms
- coefficient of friction
- Connected particles and pulleys
- Constant acceleration under gravity
- Equilibrium
- force
- light inextensible string
- limiting equilibrium
- Limiting equilibrium and static friction
Using SI units and accuracy 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.
Practise Mathematics questions
Create a free account to answer exam-style questions on this topic and get feedback on your answers.
Start free
All Mathematics A-Level termsA week of Premium from your first lesson · Then the free plan continues · No card, no charge