A person lifts a package weighing 57 N. If she lifts it 2.1 m off the floor, what work has she done? Vou

Question

A person lifts a package weighing 57 N. If she lifts it 2.1 m off the floor, what work
has she done?
Vou

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Trung Dũng 5 months 2021-08-26T19:23:31+00:00 1 Answers 0 views 0

Answers ( )

    0
    2021-08-26T19:25:07+00:00

    Answer:

    119.7 J

    Explanation:

    w=F*D=57*2.1=119.7 J

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )