Bite-Sized Math: Paper 4 (Mechanics)

Short reels on Mechanics questions that trip students up. Open a reel to watch it.

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1. Forces and equilibrium

2. 1Friction: greatest or least force using limiting equilibrium
3. 2Forces in equilibrium: find the resultant, then take its exact opposite
4. 3Equilibrium with strings: least or greatest force when a string goes slack

5. Kinematics

6. 4Two particles with velocity functions: greatest distance between them
7. 5Kinematics: show that a particle never comes to instantaneous rest
8. 6Distance travelled versus displacement: check for a change in direction

9. Momentum

10. 7Two particles at constant speed: time until collision using relative velocity

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