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26 May, 13:23

during a 500-meter race, a runner ran the first 400 meters in 1 minute and 25 seconds. she finished the race i 2 minutes and 15 seconds. what was her average rate of change during the last 100 meters of the race as a decimal

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  1. 26 May, 13:45
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    She ran the last 100 meters in 2:15 - 1:25 = 0:50, so her average speed was

    ... (100 m) / (50 s) = 2.0 m/s
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