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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Fig: 1