Physics A-Level
Friction
What Friction means in Physics A-Level, as defined for AQA, OCR.
Definitions of Friction
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Reference: OCR
A force that opposes relative motion or the tendency of relative motion between surfaces in contact.
A contact force that opposes relative motion or the tendency to move between surfaces.
Topics that use Friction
- Projectile motion (AQA A-Level)
- Dynamics (OCR A-Level)
Related terms
- Drag
- Air resistance
- Drag dependence on speed
- Drag in gases
- Effect of drag on projectile trajectories
- Free fall with drag
- homogeneity
- Independence of perpendicular motions
Using Friction in the exam
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