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Lunar Leaper

Gravity on the Moon is about 1/6th that on the Earth. A pole-vaulter 2 metres tall can clear a 5 metres pole on the Earth. How high a pole could he clear on the Moon?

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Whirlyball

Whirl a conker around in a horizontal circle on a piece of string. What is the smallest angular speed with which it can whirl?

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Bridge Builder

In this short problem we investigate the tensions and compressions in a framework made from springs and ropes.

Cannon Balls

Stage: 5 Short Challenge Level: Challenge Level:1
What equation do you need to solve?