MrBadmusAutumn Second Half

Year 7 · Autumn Second Half

Physics

3 lessons from 1 unit.

Unit P4 · lessons 1 to 3 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. 01What a force isModelPush a wall hard enough and you move backwards. Nothing about you got stronger — so what actually pushed you?Open this lesson
  2. 02Drawing and adding forcesModelA sledge is pulled one way with 40 N and the other way with 25 N. One single arrow does the job of both. How long is it, and which way does it point?Open this lesson
  3. 03Balanced and unbalancedContrastBoth books are pulled down just as hard. So what decides whether something stays put or starts to move?Open this lesson

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