Forces

Simple explanation

Speed is distance travelled per unit time.

Analogy or example

A steep straight line on a distance-time graph shows a higher constant speed.

Misconception trap

A flat distance-time graph means high speed.

Real-world relevance

Speed and acceleration connects equations and models to technology, transport, energy and space.

Vocabulary check

speed, acceleration, distance, travelled, unit

Simple explanation

Resultant force causes acceleration.

Analogy or example

A car at constant velocity has balanced forces.

Misconception trap

A moving object must have a resultant force acting on it.

Real-world relevance

Newton's laws connects equations and models to technology, transport, energy and space.

Vocabulary check

newton, laws, resultant, force, causes

Simple explanation

Momentum equals mass times velocity.

Analogy or example

Airbags increase stopping time and reduce force on a passenger.

Misconception trap

Only fast objects have momentum.

Real-world relevance

Momentum connects equations and models to technology, transport, energy and space.

Vocabulary check

momentum, equals, mass, times, velocity

Simple explanation

Scalars and vectors sits inside Forces, so learn the core definition and the exam example that usually comes with it.

Analogy or example

For a longer answer, write the equation or model first, then use units, graph clues or direction carefully.

Misconception trap

Scalars and vectors can be confused with nearby Forces ideas.

Real-world relevance

Scalars and vectors connects equations and models to technology, transport, energy and space.

Vocabulary check

scalars, vectors, sits, inside, forces

Simple explanation

Weight and gravity sits inside Forces, so learn the core definition and the exam example that usually comes with it.

Analogy or example

For a longer answer, write the equation or model first, then use units, graph clues or direction carefully.

Misconception trap

Weight and gravity can be confused with nearby Forces ideas.

Real-world relevance

Weight and gravity connects equations and models to technology, transport, energy and space.

Vocabulary check

weight, gravity, sits, inside, forces

Simple explanation

Work done and elasticity sits inside Forces, so learn the core definition and the exam example that usually comes with it.

Analogy or example

For a longer answer, write the equation or model first, then use units, graph clues or direction carefully.

Misconception trap

Work done and elasticity can be confused with nearby Forces ideas.

Real-world relevance

Work done and elasticity connects equations and models to technology, transport, energy and space.

Vocabulary check

work, done, elasticity, sits, inside

Simple explanation

Moments and pressure sits inside Forces, so learn the core definition and the exam example that usually comes with it.

Analogy or example

For a longer answer, write the equation or model first, then use units, graph clues or direction carefully.

Misconception trap

Moments and pressure can be confused with nearby Forces ideas.

Real-world relevance

Moments and pressure connects equations and models to technology, transport, energy and space.

Vocabulary check

moments, pressure, sits, inside, forces

Simple explanation

Stopping distances sits inside Forces, so learn the core definition and the exam example that usually comes with it.

Analogy or example

For a longer answer, write the equation or model first, then use units, graph clues or direction carefully.

Misconception trap

Stopping distances can be confused with nearby Forces ideas.

Real-world relevance

Stopping distances connects equations and models to technology, transport, energy and space.

Vocabulary check

stopping, distances, sits, inside, forces

Simple explanation

Pressure in fluids [Triple Only] sits inside Forces, so learn the core definition and the exam example that usually comes with it.

Analogy or example

For a longer answer, write the equation or model first, then use units, graph clues or direction carefully.

Misconception trap

Pressure in fluids [Triple Only] can be confused with nearby Forces ideas.

Real-world relevance

Pressure in fluids [Triple Only] connects equations and models to technology, transport, energy and space.

Vocabulary check

pressure, fluids, triple, only, sits