Every mechanical wave has its origin in an oscillating object. The particles in the medium themselves oscillate, in a similar...

Teaching Guidance 14-16

Early introductions to forces in equilibrium will be via static situations. However, rather than identifying forces which sum...

Teaching Guidance 5-11 11-14

Objects that move at a steady speed in a straight line are often seen as having a force pushing them. The idea that there...

Teaching Guidance 11-14