MrBadmusAI

Year 7 · Spring Second Half

Physics

3 lessons from 1 unit.

Unit P4 · lessons 7 to 9 of 9

Forces

A force is never something one object has. It takes two, it is measured in newtons, and what an object actually responds to is whatever is left over when you have added them all up.

  1. 07Moments: the turning effectQuantitativePush a door open at the handle and it swings. Push just as hard right beside the hinge and it hardly moves. Same door, same push, different result.Open this lesson
  2. 08Springs and Hooke's lawInvestigationA spring is the only instrument in the lab that turns a force into a length you can read with a ruler. It works beautifully — right up until it does not.Open this lesson
  3. 09Non-contact forcesClassifyEvery force so far has needed something to touch something. Three of them do not, and one of those is holding you to the planet right now.Open this lesson

Back to all three sciences this half term The whole KS3 Physics course