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04_InstSolManual_PDF_Part6

# 04_InstSolManual_PDF_Part6 - 4-6 Chapter 4(b v0x 5 110 km h...

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(b) so Reflect: The stopping distance is proportional to the square of the initial speed. 4.24. Set Up: Each force is applied to the box by another object. Solve: (a) The box pulls on the rope. (b) The friction force is a horizontal force applied to the box by the floor. The reaction force is a horizontal force in the opposite direction applied by the box to the floor. (c) The normal force is an upward force applied by the floor to the box. The reaction force is a downward force applied by the box to the floor. (d) The weight of the box is a downward force applied to the box by the earth. The reaction force is an upward force applied to the earth by the box. 4.25. Set Up: refers to forces that all act on one object. The third law refers to forces that a pair of objects exert on each other. Solve: (a) the earth (gravity) (b) 4 N; the book (c) no, these two forces are exerted on the same object (d) 4 N; the earth; the book; upward (e) 4 N, the hand; the book; downward (f) second (The two forces are exerted on the same
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