TOPIC 3 · AS LEVEL

Forces explain
changing motion.

Move from free-body diagrams to Newton’s laws, momentum transfer, terminal velocity and collision analysis—with every step connected to a physical model.

Start lesson 1 →Open dynamics toolkit

YOUR LEARNING PATH

Eight lessons. From cause to consequence.

First identify the forces and the system. Then choose a positive direction, calculate the resultant, and apply the law that connects it to acceleration or momentum change.

3.18 lessons

Dynamics

Connect forces to changes in motion and apply momentum conservation to interactions.

01Mass and inertia
02Force and acceleration
03Newton's laws of motion
04Weight and gravitational force
05Momentum and impulse
06Conservation of linear momentum
07Drag and terminal velocity
08Elastic and inelastic collisions

Take Topic 3 assessment →START HERE

INTERACTIVE DYNAMICS TOOLKIT

Test forces, impulse and collisions.

Change forces and masses, inspect force–time impulse, model terminal speed, and check momentum and kinetic energy.

Open toolkit →CIE PRACTICE WORKSHOP

Draw, define, then calculate.

Attempt eight multi-step questions with optional modelling hints and detailed worked solutions.

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