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2 January, 16:24

Roberto has twice the mass his sister Mary has but runs at the same velocity as Mary. Will his kinetic energy be twice as much?

(Mary has a mass of 40 kg and sprints at 1 m/s)

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  1. 2 January, 19:35
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    his kinetic energy would not be as twice as his sister Mary because he run at the same speed of mary
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