James and Ellie introduce elastic potential and explain the key equations needed to understand the relationship between forces and extension. ELLIE: Hello and welcome to the BBC Bitesize Physics ...

There are four such forces that ... then physics will have effectively achieved its end. Now the entire physical universe would be encompassed by a set of equations - or perhaps just one equation.

Some questions in the exam will require you to recall and apply equations you have learned in class. Other questions will ask you to use the 'Physics Equation Sheet'. This is a set list of ...

Newton’s theory of universal gravitation says that every particle in the universe attracts every other particle through the force of gravity ... His simple equation for universal gravitation ...