Question 12

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▾ Part A

How much power is needed to push a 90 kg chest at 0.72 m/s along a horizontal foor where the coefficient of friction is 0.71?

Express your answer using two significant figures.

197) ΑΣΦΑ ← →

P =

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Part B

How much work is done in pushing the chest 13 m?

Express your answer using two significant figures.

1VG ΑΣΦ

W =

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#

F2

20

?

?

W

J

F6

+11

<

12 of 20

11

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