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Mathematics, 27.06.2021 19:40 emmawytko

Ivy is competing in a 400 m race. She runs at a constant speed of 5.4 m/s for the first 150 m, then 4.5 m/s for 40 seconds.
The remainder of the race takes her 34 seconds to complete.
What is Ivy's average speed for the entire race to 1 dp?

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Ivy is competing in a 400 m race. She runs at a constant speed of 5.4 m/s for the first 150 m, then...

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