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A constant external force P = 310 N is applied at an angle 30° below the horizontal to a 20 kg box, pushing the box across a horizontal frictionless surface. If it started at rest, what is the box’s kinetic energy after it has been pushed 8.0 m?

A constant external force P = 310 N is applied at an angle 30° below the horizontal to a 20 kg box, pushing the box across a horizontal frictionless surface. If it started at rest, what is the box’s kinetic energy after it has been pushed 8.0 m?

College Physics
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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A constant external force P = 310 N is applied at an angle 30° below the horizontal to a 20 kg box, pushing the box across a horizontal frictionless surface. If it started at rest, what is the box’s kinetic energy after it has been pushed 8.0 m?

A. 1568 J

B. 2148 J

C. 2480 J

D. 1240 J

The image depicts a physics problem involving a 20 kg block on a horizontal surface. A force \( P \) is applied to the block at a 30° angle to the horizontal. The block is meant to move a distance of 8.0 meters along the surface. Key elements in the diagram: 1. **Block**: - Mass of the block is labeled as 20 kg. 2. **Force \( P \)**: - Applied at a 30° angle to the horizontal plane. 3. **Distance**: - The block is intended to travel a distance of 8.0 meters along the surface. This setup is typically used to analyze forces, motion, and potentially work and energy concepts in physics.
Transcribed Image Text:The image depicts a physics problem involving a 20 kg block on a horizontal surface. A force \( P \) is applied to the block at a 30° angle to the horizontal. The block is meant to move a distance of 8.0 meters along the surface. Key elements in the diagram: 1. **Block**: - Mass of the block is labeled as 20 kg. 2. **Force \( P \)**: - Applied at a 30° angle to the horizontal plane. 3. **Distance**: - The block is intended to travel a distance of 8.0 meters along the surface. This setup is typically used to analyze forces, motion, and potentially work and energy concepts in physics.
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