Valeria Valeria

16-08-2024
Mathematics

College

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

Answer :

sqdancefan sqdancefan

21-09-2023

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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