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G S Rehill's Interactive Maths Software Series - "Building a Strong Foundation in Mathematics" from mathsteacher.com.au.

Order a 12-month Year 7 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 8 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 9 Interactive Maths software Homework Licence for only $19.95. Order a 12-month Year 10 Interactive Maths software Homework Licence for only $19.95.

Year 8 Interactive Maths - Second Edition


Speed

The average speed, s, of an object is the distance, d, travelled by the object in one unit of time, t. That is:


Example 6

A cyclist travelled at 12 km/h for 5 hours.  How far did he travel?

Solution:


Example 7

A cyclist covers 36 kilometres in 4 hours.  What is the speed?

Solution:


Example 8

A walker travelled a distance of 26 km at an average speed of 6.5 km/h.  Find the time taken to cover the distance.

Solution:


Key Terms

speed, distance, time

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