A person pushes a 20.9-kg shopping cart at a constant velocity for a distance of 21.0 m on a flat horizontal surface. She pushes in a direction 22.4° below the horizontal. A 49.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force. (a) Number i Units
A person pushes a 20.9-kg shopping cart at a constant velocity for a distance of 21.0 m on a flat horizontal surface. She pushes in a direction 22.4° below the horizontal. A 49.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force. (a) Number i Units
University Physics Volume 1
18th Edition
ISBN:9781938168277
Author:William Moebs, Samuel J. Ling, Jeff Sanny
Publisher:William Moebs, Samuel J. Ling, Jeff Sanny
Chapter7: Work And Kinetic Energy
Section: Chapter Questions
Problem 99CP: Shown below is a 40-kg crate that is pushed at constant velocity a distance 8.0 m along a 30 Incline...
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![A person pushes a 20.9-kg shopping cart at a constant velocity for a distance of 21.0 m on a flat horizontal surface. She pushes in a
direction 22.4° below the horizontal. A 49.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force
that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force.
(a) Number
(b) Number
(c) Number
(d) Number
i
i
i
i
Units
Units
Units
Units
+](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F15ddb6cd-6983-4657-9770-05e88534b1be%2F6ce45802-c2ea-486d-aada-73ee1b358111%2Fia5b6g_processed.jpeg&w=3840&q=75)
Transcribed Image Text:A person pushes a 20.9-kg shopping cart at a constant velocity for a distance of 21.0 m on a flat horizontal surface. She pushes in a
direction 22.4° below the horizontal. A 49.0-N frictional force opposes the motion of the cart. (a) What is the magnitude of the force
that the shopper exerts? Determine the work done by (b) the pushing force, (c) the frictional force, and (d) the gravitational force.
(a) Number
(b) Number
(c) Number
(d) Number
i
i
i
i
Units
Units
Units
Units
+
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