lilcutessarah46751 lilcutessarah46751
  • 12-10-2022
  • Physics
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in michael johnson's world-record 400 m sprint, he ran the first 100 m in 11.20 s; then he reached the 200 m mark after a total time of 21.32 s had elapsed, reached the 300 m mark after 31.76 s, and finished in 43.18 s.

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