Motion and Orbiting: a view at energy

A summary of a number of things related to forces can be seen on a ramp.

A good example of the transformation of energy between potential and kinetic:   Projectile (PhET), and another.
Notice: ‘component motion’ + energy! How are potential and kinetic energy distributed over components?

Orbiting motion (or failure to reach it) is ‘an exercise’ in energy considerations:
Newton's cannon,   and a mention of   Kepler's Laws.

Also: notice how things go around each other.
This will be a useful model for how electrical forces work – it will help build an atomic model.