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Wednesday, July 23, 2014

Commonwealth Maths


Commonwealth Maths
How fast is Usain Bolt?
The World’s Fastest Man

Usain Bolt holds the 100m World Record at 9.58 seconds.
1. Going at that speed, how long would it take him to run:
(a) 1km (1000m) 9.58 x 10=95.80
(b) 1 mile (1600 metres) (1.6km) 9.58 x 16=  (153.28)
(c) A marathon (26.2 miles)9.58 x 26.2= 250.99

2.  What is his speed in
(a) Metres per second -4.28  
(b) Miles per hour - 21.42

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