1. The problem statement, all variables and given/known data Hi everyone, I'm currently working on year 12 maths and am able to answer questions in the maths book for the various rules of differentiation (chain, product, quotient) and can determine which questions should be answered using which rules. But in the maths book, the questions are presented in the form of equations and there are no word questions in the book I'm using. The issue I'm having is trying to come up with examples in physics where the quotient rule would be used - like coming up with a worked solution question that requires using the quotient rule in order to solve it (that would be accessible at the year 12 level). Would anyone be able to provide such an example? While I can solve the maths questions, I don't feel like I can really understand it until I can see it in action, if that makes sense. 2. Relevant equations The quotient rule: dy/dx = [v(du/dx) - u(dv/dx)] / v^2 3. The attempt at a solution I've done some extensive web searches and have found some good examples for the chain rule and the product rule, but haven't been able to find anything for the quotient rule. I tried to create my own question using basic kinematics, but haven't had much success. http://www.ugrad.math.ubc.ca/coursedoc/math100/notes/derivative/chainap.html <- this is a good example of what I'm looking for with regard to the quotient rule, which will hopefully make it clear what I'm hoping to find. Any help would be much appreciated. Thanks!