ForcesIntroduction

The Laws That Run the Universe

Part of Newton's Laws of Motion · GCSE GCSE Physics revision

This introduction covers The Laws That Run the Universe within Newton's Laws of Motion for GCSE Physics. Revise Newton's Laws of Motion in Forces for GCSE Physics with 24 exam-style questions and 15 flashcards. This topic shows up very often in GCSE exams, so students should be able to explain it clearly, not just recognise the term. It is section 1 of 15 in this topic. Use this introduction to connect the idea to the wider topic before moving on to questions and flashcards.

Topic position

Section 1 of 15

Practice

24 questions

Recall

15 flashcards

📖 The Laws That Run the Universe

In 1687, Isaac Newton published three laws that explain virtually ALL motion — from falling apples to orbiting planets to crashing cars. These laws are so fundamental that NASA still uses them to calculate spacecraft trajectories. Law 1: Things keep doing what they're doing unless forced to change. Law 2: Force equals mass times acceleration. Law 3: Every action has an equal and opposite reaction. Simple to state, but they explain everything!

Keep building this topic

Read this section alongside the surrounding pages in Newton's Laws of Motion. That gives you the full topic sequence instead of a single isolated revision point.

Newton's First Law — The Law of Inertia The Seatbelt Analogy Newton's Second Law — F = ma

Practice Questions for Newton's Laws of Motion

According to Newton's First Law, what happens to an object when there is no resultant force acting on it?

A. It accelerates in the direction of motion
B. It remains at rest or continues moving at constant velocity
C. It decelerates and eventually stops
D. It changes direction

1 markfoundation

A spaceship is travelling through deep space far from any planets. The engines are switched off. Explain what will happen to the motion of the spaceship and why.

2 marksstandard

Quick Recall Flashcards

Key Concepts

A moment is the turning effect of a force

Key Concepts

Unit: Newton metres (Nm)

24 questions on Newton's Laws of Motion — practise free

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Newton's Laws of Motion

Newton's First Law — The Law of Inertia