Earth Orbit

Follow in the steps of Newton and find the path that the earth follows around the sun.

Gravity Paths

Where will the spaceman go when he falls through these strange planetary systems?

Motorbike Momentum

A think about the physics of a motorbike riding upside down

Whirlyball

Stage: 5 Challenge Level:
You can try this with a conker on a string. It is just motion in a circle with constant angular speed $\omega$. Remember that the acceleration towards the centre is $r\omega ^2$ where $r$ is the radius of the circle. Resolving horizontally use 'force = mass times accelaration'.