The current, 2019, women's world record for the 400-meter run around an oval track is held by Marita Koch, with a time of 47.60 seconds. What was her average speed during this race

v = 8.403 m/s

Explanation:

Given that,

The current, 2019, women's world record for the 400-meter run around an oval track is held by Marita Koch, with a time of 47.60 seconds.

Average speed, v = d/t

d = 400 m

t = 47.6 s

So,

Hence, her average speed during the race is 8.403 m/s.

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