Analyse a graph in physics using y = mx + c | A-Level Physics How To

In physics practical work we frequently plot straight line graphs that we use to calculate an unknown quantity. But how is the graph used to determine the quantities of interest? In this video I explain how to compare the experiment's equation to y = mx + c so that we can relate the graph's gradient and y-intercept to unknown quantities. I then demonstrate the method by analysing three real equations and graphs:
1. v² = 2gh
2. R = ρL/A
3. p = Wq/Mg + 0.2R/M
You can download the worksheet I used in this video here: physicshq.wixsite.com/alevelp...
In the follow up video [ • Analyse log graphs in ... ] I demonstrate the procedure for log graphs / equations.
Relevant concepts: physics graphs, gradient, y-intercept, equation, algebra, straight line, graphical analysis