Mary applies a force of 80 N to push a box with an acceleration of 0.54 m/s2. When she increases the pushing force to 87 N, the box's acceleration changes to 0.84 m/s2. There is a constant friction force preser between the floor and the box. (a) What is the mass of the box in kilograms? kg (b) What is the coefficient of kinetic friction between the floor and the box?

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Chapter1: Units, Trigonometry. And Vectors
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Mary applies a force of 80 N to push a box with an acceleration of 0.54 m/s2. When she increases the pushing force to 87 N, the box's acceleration changes to 0.84 m/s2. There is a constant friction force present
between the floor and the box.
(a) What is the mass of the box in kilograms?
kg
(b) What is the coefficient of kinetic friction between the floor and the box?
Transcribed Image Text:Mary applies a force of 80 N to push a box with an acceleration of 0.54 m/s2. When she increases the pushing force to 87 N, the box's acceleration changes to 0.84 m/s2. There is a constant friction force present between the floor and the box. (a) What is the mass of the box in kilograms? kg (b) What is the coefficient of kinetic friction between the floor and the box?
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