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10 December, 09:46

An athlete ran 42000 m in 2 hour 20 minutes. - 140min

Calculate her average speed in

(a)

kilometres per hour,

(b) metres per second.

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Answers (1)
  1. 10 December, 10:20
    0
    A) 42,000m divided by 2 1/3 = 18,000m divide by 1000m to get km = 18km/hr

    B) 18,000m divided by 60 to get minutes = 300m divide by 60 to get seconds = 5m/sec.
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