Demonstration: When a pendulum is displaced, it stores energy gravitationally due to its increased height. When subsequently...

Practical Activity 14-16

Multiflash photography creates successive images at regular time intervals on a single frame.

Teaching Guidance 14-16

So far momentum looks like just one measure of motion amongst many (velocity, energy in the kinetic store)–useful for some...

Physics Narrative 14-16

The Principle of Conservation of Energy lies behind much of the physics studied at this level. Although we are concerned with...

Lesson 16-19

Many levers work as force-multipliers. In this case a small force (or effort) acting on the lever moves a large distance to...

Teaching Guidance 11-14

Demonstration: In elastic collisions the energy stored kinetically is conserved. In inelastic collisions it is not. But where...

Practical Activity 14-16