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masya89 [10]
2 years ago
15

Un objeto de 5 Kg se mueve a 20 m⁄s, que trabajo habrá que realizar para que su velocidad se duplique:

Physics
1 answer:
faltersainse [42]2 years ago
5 0

Answer:

<h3>$₽﷼£❤☺wkhisrjcoycfivyudg</h3>
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A 75 N box of oranges is being pushed across a horizontal floor. As it moves, it is slowing at a constant rate of 0.90 m/s each
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Answer:

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Explanation:

Conceptual analysis

We apply Newton's second law:

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∑F : algebraic sum of the forces in Newton (N)

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a : acceleration in meters over second square (m/s²)

Data:

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μk: coefficient of kinetic friction

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Problem development

We apply the formula (1)

∑Fy = m*ay    , ay=0

N-W-25 = 0

N = 75 +25

N= 100N

∑Fx = m*ax    

20-Ff= m*ax    

20-μk*100 = 7.65*(-0.90 )

20+7.65*(0.90) = μk*100

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