# Unit Overview: Forces

National Curriculum

For next step we recommend the unit: Forces and motion.

## Lessons:

25 lessons

### Forces: an introduction

An introduction to the forces topic looking at contact and non-contact forces, and comparing scalars and vectors.

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### Weight, mass and gravity

In this lesson we look at the difference between weight and mass, and how to calculate weight using gravitational field strength and mass. We also explore the use of unit conversions, and equation rearranging.

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### Resolving forces (HT)

In this lesson we will look at calculating resultant force, where vectors occur in similar and different directions. We will look at how resultant forces affect the motion of an object. We will also look at HT-only content in resolving a single force into its two components.

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### Forces and work

In this lesson we define work done, introduce the equation for work done and use it to calculate force and distance.

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### Forces and elasticity (Part 1)

In this lesson we look at elastic objects, and the relationship between force and extension. We also go through the method for one of your required practicals.

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### Forces and elasticity (Part 2)

In this lesson we carry on looking at elastic objects, and the relationship between force and extension. We also go through the results of our required practical.

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### Moments and levers

In this lesson we look at moments and levers, and how the rotational effect of a force helps us in many everyday situations.

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### Moments and gears

In this lesson we look further at moments and also gears. We look at how the rotational effect of a force helps us in many everyday situations.

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### Pressure

In this lesson we look at pressure. By the end of the lesson you should be able to say what pressure is, how to calculate it, and how we can use this knowledge in everyday situations.

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### Pressure in fluids

In this lesson, we concentrate on pressure in fluids, and in particular how pressure changes in liquids. By the end of the lesson you will be able to calculate pressure in a column of water, and also explain why objects sink or float.

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### Atmospheric pressure

In this lesson we look at atmospheric pressure, and how it changes as we change altitude.

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### Speed

In this lesson we will learn the definition and equation of speed.

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### Distance: Time graphs

In this lesson we will learn about distance-time graphs, and how to calculate speed using the gradient of a graph.

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### Acceleration

In this lesson we will look at the definition and equation of acceleration. We will also learn how to calculate acceleration.

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### Velocity: Time Graphs

In this lesson we will look at the relationship between velocity and acceleration, and calculating acceleration from a velocity-time graph.

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### Terminal velocity

In this lesson we will look at the definition and conditions needed for terminal velocity. We will look at terminal velocity in different contexts.

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### Newton's Laws

In this lesson we will learn Newton's laws of motion. We will learn how to calculate the resultant force of different objects. We will also look at the relationship between resultant force, mass and acceleration.

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### Acceleration Required Practical (Part 1)

In this lesson we will look at the required practical of investigating the effect of varying the mass on the acceleration of an object of constant force.

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### Acceleration Required Practical (Part 2)

In this lesson we will look at the required practical of investigating the effect of varying the force on the acceleration of an object of constant mass.

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### Stopping distance

In this lesson, we will learn about stopping distance. We will look into thinking distance, braking distance and how these are linked to stopping distance.

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### Momentum

In this lesson we will learn about the definition of momentum and how to calculate momentum of different objects. We will also look into the principle of conservation of momentum.

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### Collisions and car safety

In this lesson we will look at car safety and the factors that can affect car safety.

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### Combined science review

This lesson revises the Forces subject knowledge common to the GCSE Combined Science and Physics, and gives an opportunity to work through some independent tasks and exam questions.

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### Physics only review

This lesson revises the Forces subject knowledge of the GCSE Physics Science only, and gives an opportunity to work through some independent tasks and exam questions.

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### Case Study: Sir Isaac Newton

In this lesson we explore the life of Sir Isaac Newton, and look at some of his key findings.

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