Mary applies a force of 78 N to push a box with an acceleration of 0.40 m/s2. When she increases the pushing force to 90 N, the box's acceleration changes to 0.66 m/s?. There is a constant friction force presentbetween 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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Description: Mary applies a force of 78 N to push a box with an acceleration of 0.40 m/s2. When she increases the pushing force to 90 N, the box's acceleration changes to 0.66 m/s?. There is a constant friction force presentbetween the floor and the box.(a) What

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Mary applies a force of 78 N to push a box with an acceleration of 0.40 m/s?. When she increases the pushing force to 90 N, the box's acceleration changes 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?

Mary applies a force of 78 N to push a box with an acceleration of 0.40 m/s?. When she increases the pushing force to 90 N, the box's acceleration changes 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?

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter4: The Laws Of Motion

Section: Chapter Questions

Problem 20CQ: A large crate of mass m is placed on the back of a truck but not tied down. As the truck accelerates...

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