The graph above shows two athletes Kirani and Wayde competing in a 400 metre race.Name: Date:

1) Kirani runs at a constant speed. Calculate his average speed correct to 2 decimal places.

2) After how many seconds into the race are Kirani and Wayde level.

3) Who won the race and by how many seconds?

4) How far did run Kirani after 10 seconds? (give your answer to the nearest 5m)

5) What was Wayde's speed 22 seconds into the race? (give your answer to 1 decimal place)

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2) The two runners are level after 19 seconds.

3) Wayde won the race by 5 seconds.

4) 75 metres

5) 4.9 m/s

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# Answers

1) 400m in 53 seconds => average speed of 7.55 m/s2) The two runners are level after 19 seconds.

3) Wayde won the race by 5 seconds.

4) 75 metres

5) 4.9 m/s

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