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Wild ride: get a grip

Investigate the role of friction in performance of bicycle tyres. Test how the type of tread affects grip and speed. Choose tyres best suited to track and weather conditions in a time trial. This learning object is one in a series of four objects.

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Concert room at Ballarat, 1855

This is a watercolour, measuring 22.8 cm x 31.9 cm, by Samuel Thomas Gill (1818-80), a famous colonial artist. It shows Charles Thatcher (1831-78), a comic singer well known on the gold fields, performing popular songs on stage at the Charlie Napier Hotel in Ballarat with a female accompanist. The painting has the artist's ...

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'Sergeants Freehold Quartz Gold Mining Company's claim, Redan, Ballarat', 1881

This is a pen, ink and watercolour drawing, measuring 43.5 cm x 55 cm, of Sergeants Freehold Quartz Gold Mining Company's claim at Redan, Ballarat. It was drawn in 1881 by T G Moyle, a gold fields artist working in the 1880s and 1890s. Extensive mine buildings are spread over a wide area, but dwarfed by a huge pile of quartz. ...

Interactive

Give me a brake

Investigate braking efficiency of cars and trucks by testing stopping distances under controlled conditions. Test effects of vehicle type, tyres, road surface and weather conditions. Choose driving speed, then apply brakes and compare stopping distances. Estimate distances from target markers. Answer questions about antilock ...

Interactive

It's a drag

Investigate the braking efficiency of cars and trucks. Test stopping distances under controlled conditions. Compare effects of vehicle type, tyres, road surface and weather conditions. Choose driving speed, then apply brakes and compare stopping distances. Answer questions about friction, tyres and driver fatigue. This ...