120. Each of the following diagrams shows a different block being pushed to the right by a horizontal force across a horizontal surface at constant velocity. 6 kg 2 kg 3 N 2N Polished wood Rough wood A 2 kg 4 kg 2 N Smooth wood Glass D In which two diagrams is the force of friction the same?
120. Each of the following diagrams shows a different block being pushed to the right by a horizontal force across a horizontal surface at constant velocity. 6 kg 2 kg 3 N 2N Polished wood Rough wood A 2 kg 4 kg 2 N Smooth wood Glass D In which two diagrams is the force of friction the same?
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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please help with question 120

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Questions
116. An empty wooden crate slides across a
warehouse floor. If the crate was filled, the
coefficient of kinetic friction between the crate
and the floor would
120. Each of the following diagrams shows a
different block being pushed to the right by a
horizontal force across a horizontal surface at
constant velocity.
(1) decrease (2) increase (3) remain the same
6 kg
2 kg
117. An empty wooden crate slides across a
warehouse floor. If the crate was filled, the
3 N
2 N
magnitude of the force of kinetic friction
between the crate and the floor would
Polished wood
Rough wood
A
(1) decrease (2) increase (3) remain the same
2 kg
118. As an object initially at rest on a horizontal
surface is set in motion, the magnitude of the
force of friction between the object and the
surface
4 kg
4 N
2 N
Smooth wood
Glass
(1) decreases (2) increases (3) remains the same
D
119. As a thrown baseball is acted on by air friction,
the thermal energy of the ball
In which two diagrams is the force of friction
the same?
(1) decreases (2) increases (3) remains the same
Topic 2: Mechanics
55
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