A student investigates how the force applied to a spring affects the extension of the spring. What is the independent variable in this investigation?
the extension of the spring
the spring constant of the spring
the force applied to the spring
the natural length of the spring
40 exam-style questions on AQA GCSE Physics 5.3 Forces and elasticity, covering 5.3 Forces and elasticity. Each one has a worked solution and a mark scheme showing where the marks go.