ForcesAQA

Impulse & Collisions

Revise Impulse & Collisions in Forces for GCSE Physics with 13 exam-style questions and 10 flashcards. Use the notes, sample questions, and flashcards below to connect this topic to the rest of your GCSE revision plan.

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Why Crumple Zones Save Lives

Introduction 2

Understanding Impulse

Key Facts 3

Impulse and Force-Time Graphs

Diagram 4

Exam Focus — Impulse and Collisions

Exam Focus 5

Exam Tips — Impulse and Collisions

Exam Tips 6

Elastic vs Inelastic Collisions

Key Facts 7

Knowledge Organiser: Impulse and Collisions

Summary

Sample Flashcards

Understanding Impulse

Impulse = Force × time (F × t) — measured in N s

Understanding Impulse

Impulse = Change in momentum (Δp = mΔv) — measured in kg m/s

Exam questions for Impulse & Collisions

Which equation correctly defines impulse?

A. impulse = force / time
B. impulse = force x time
C. impulse = mass x acceleration
D. impulse = mass x velocity

1 markfoundation

Explain how an airbag reduces the risk of injury to a driver in a collision.

3 marksstandard

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