1) Tim is practising for the 100 m sprint. He can complete a race in 12 s. What is his speed? a) 0.12 m/s b) 8.33m/s c) 1.200m/s 2) Barry wants to know how far it is from his house to the local sports centre. He estimates that his average speed when he drives there is around 25 miles/hour and that it takes him 15 minutes to get there. Using Barry’s estimates, what is the approximate distance from Barry’s house to the sports centre? Give your answer in miles. a) 6.25 miles b) 375 miles c) 100 miles 3) Sian is a keen cyclist and plans to ride in a 50 km race next week. She knows her average speed is roughly 12.5 km/hour but she wants to know how long it will take her to complete the race. How long should it take Sian to finish the race? a) 4 hours b) 635 hours c) 40 hours 4) Bill wants to know if his pocket watch is solid gold. Solid gold has a density of 19.3 g/cm3. He knows that his watch has a mass of 120 g and a volume of 8 cm3. What is the density of the watch? a) 19.3 g/cm3 b) 6.22 g/cm3 c) 15 g/cm3 5) The Bank of England currently holds 238 m3 of gold in a vault deep below the streets of London. Gold has a density of 19,300 kg/m3. What is the mass of the gold? a) 4 593 400 kg b) 81.09 kg c) 0.01 kg

Compound Measures

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