13) Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 67.0 N, the second a force of 92.0 N, friction is 22.0 N, and the mass of the third child plus wagon is 23.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (Select all that apply.) the wagon the children outside the wagon the child in the wagon (b) Draw a free-body diagram, including all forces acting on the system

13) Suppose two children push horizontally, but in exactly opposite directions, on a third child in a wagon. The first child exerts a force of 67.0 N, the second a force of 92.0 N, friction is 22.0 N, and the mass of the third child plus wagon is 23.0 kg. (a) What is the system of interest if the acceleration of the child in the wagon is to be calculated? (Select all that apply.) the wagon the children outside the wagon the child in the wagon (b) Draw a free-body diagram, including all forces acting on the system

Name: 13) Suppose two children push horizontally, but in exactly opposite d
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Description: 13) Suppose two children push horizontally, but in exactly opposite directions, on a third child in awagon. The first child exerts a force of 67.0 N, the second a force of 92.0 N, friction is 22.0 N, and themass of the third child plus wagon is 23.0

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ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows:

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Question

13) Suppose two children push horizontally, but in exactly opposite directions, on a third child in a
wagon. The first child exerts a force of 67.0 N, the second a force of 92.0 N, friction is 22.0 N, and the
mass of the third child plus wagon is 23.0 kg.
(a) What is the system of interest if the acceleration of the child in the wagon is to be
calculated? (Select all that apply.)
the wagon the children outside the wagon the child in the wagon
(b) Draw a free-body diagram, including all forces acting on the system
O
N
7/2
+
F₁
W
Th
133
7₂
F₁
7₁
Ñ
Ĵ
7
W
N
W
F₂
7/₂
(c) Calculate the acceleration in m/s². (Enter the magnitude.)
m/s²
(d) What would the acceleration be (in m/s²) if friction were 25.0 N? (Enter the magnitude.)
m/s²

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