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Collisions (AQA GCSE Combined Science: Trilogy: Physics): Revision Note

Exam code: 8464

Katie M

Written by: Katie M

Reviewed by: Caroline Carroll

Updated on

Collisions

  • Examples of momentum in an event are collisions

  • Objects will either:

    • Collide and move in opposite directions

    • Collide, stick together, and move in the same direction together

  • When the objects move in opposite directions:

    • Each object will have a different velocity depending on its mass and the initial momentum of the system

  • When the objects stick together and move in the same direction together:

    • They will have a combined mass and velocity

  • Momentum is always conserved in a collision

Elastic & Inelastic Collisions, downloadable AS & A Level Physics revision notes

Types of collisions

Examiner Tips and Tricks

If you are asked to analyse a collision, make sure to consider:

  • The motion of each object before and after the collision

  • The speed and direction of each object

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Author
Reviewer
Katie M

Author: Katie M

Expertise: Curriculum Expert

Katie has always been passionate about the sciences, and completed a degree in Astrophysics at Sheffield University. She decided that she wanted to inspire other young people, so moved to Bristol to complete a PGCE in Secondary Science. She particularly loves creating fun and absorbing materials to help students achieve their exam potential.

Caroline Carroll

Reviewer: Caroline Carroll

Expertise: Head of Content Delivery

Caroline graduated from the University of Nottingham with a degree in Chemistry and Molecular Physics. She spent several years working as an Industrial Chemist in the automotive industry before retraining to teach. Caroline has over 12 years of experience teaching GCSE and A-level chemistry and physics. She is passionate about delivering high-quality resources to help students achieve their full potential.