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8 June, 14:09

A science textbook has a mass of 2.2 kilograms. What is it's weight on earth and mars?

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  1. 8 June, 15:19
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    Weight = (mass) x (acceleration of gravity).

    Gravity on Earth = 9.8 m/s²

    Weight of 2.2 kg = (2.2 x 9.8) = 21.56 newtons

    (about 4.9 pounds)

    Gravity on Mars = 3.7 m/s²

    Weight of 2.2kg = (2.2 x 3.7) = 8.14 newtons

    (about 1.8 pounds)
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