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21. A 0.600-kg particle has a speed of 2.00 m/s at point A and V kinetic energy of 7.50 J at point . What is (a) its kinetic energy at 0, (b) its speed at 6, and (c) the net work done on the particle by external forces as it moves from @ to (B? 22. A 4.00-kg particle is subject to a net force that varies with V position as shown in Figure P7.9. The particle starts from rest at x= 0. What is its speed at (a) x= 5.00 m, (b) x and (c) x = 10.0 m, 15.0 m?

21. A 0.600-kg particle has a speed of 2.00 m/s at point A and V kinetic energy of 7.50 J at point . What is (a) its kinetic energy at 0, (b) its speed at 6, and (c) the net work done on the particle by external forces as it moves from @ to (B? 22. A 4.00-kg particle is subject to a net force that varies with V position as shown in Figure P7.9. The particle starts from rest at x= 0. What is its speed at (a) x= 5.00 m, (b) x and (c) x = 10.0 m, 15.0 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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SECTION 7.5 Kinetic Energy and the Work-Kinetic Energy Theorem 21. A 0.600-kg particle has a speed of 2.00 m/s at point A and V kinetic energy of 7.50 J at point B. What is (a) its kinetic cnergy at 0, (b) its speed at 0, and (c) the net work done on the particle by external forces as it moves from @ to 8? 22. A 4.00-kg particle is subject to a net force that varies with V position as shown in Figure P7.9. The particle starts from rest at x= 0. What is its speed at (a) x= 5.00 m, (b) x= 10.0 m, and (c) x = 15.0 m?
Transcribed Image Text:SECTION 7.5 Kinetic Energy and the Work-Kinetic Energy Theorem 21. A 0.600-kg particle has a speed of 2.00 m/s at point A and V kinetic energy of 7.50 J at point B. What is (a) its kinetic cnergy at 0, (b) its speed at 0, and (c) the net work done on the particle by external forces as it moves from @ to 8? 22. A 4.00-kg particle is subject to a net force that varies with V position as shown in Figure P7.9. The particle starts from rest at x= 0. What is its speed at (a) x= 5.00 m, (b) x= 10.0 m, and (c) x = 15.0 m?
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