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What is the mass of a man running at 6.84 m/s if he has a kinetic energy of 2306 J?

kg

What is the mass of a man running at 6.18 m/s if he has a kinetic energy of 2102 J?

kg

What is the mass of a man running at 4.75 m/s if he has a kinetic energy of 1238 J?

kg

What is the mass of a man running at 5.28 m/s if he has a kinetic energy of 800.1 J?

kg

What is the mass of a man running at 4.21 m/s if he has a kinetic energy of 1207 J?

kg

What is the mass of a man running at 5.9 m/s if he has a kinetic energy of 1890 J?

kg