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3 April, 18:10

A man weighs 645 N on Earth. What is his mass?

-9.80 kg

-145 kg

-65.8 kg

-6320 kg

+4
Answers (1)
  1. 3 April, 18:33
    0
    Weight = mass * gravitional acceleration

    645 = m * 9.8

    m = 65.816 kg

    it is the third answer 65.8 kg
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