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Two disk magnets are arranged at rest on a fricitonless horizontal surface as shown in the diagram below. When the string holding them together is cut, they move apart under a magnetic force of repulsion. When the 1.0-kilogram disk reaches a speed of 3.0 meters per second, what is the speed of the 0.5-kilogram disk? String 1.0 kg 0.5 kg (1) 1.0 m/s (2) 1.5 m/s (3) 3.0 m/s (4) 6.0 m/s 10 maters per second

Two disk magnets are arranged at rest on a fricitonless horizontal surface as shown in the diagram below. When the string holding them together is cut, they move apart under a magnetic force of repulsion. When the 1.0-kilogram disk reaches a speed of 3.0 meters per second, what is the speed of the 0.5-kilogram disk? String 1.0 kg 0.5 kg (1) 1.0 m/s (2) 1.5 m/s (3) 3.0 m/s (4) 6.0 m/s 10 maters per second

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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7. Two disk magnets are arranged at rest on a fricitonless horizontal surface as shown in the diagram below. When the string holding them together is cut, they move apart under a magnetic force of repulsion. When the 1.0-kilogram disk reaches a speed of 3.0 meters per second, what is the speed of the 0.5-kilogram disk? String 1.0 kg 0.5 kg (1) 1.0 m/s (2) 1.5 m/s (3) 3.0 m/s (4) 6.0 m/s 8. What is the momentum of a 1.5 × 10³-kilogram car as it travels at 30. meters per second due east for 60. seconds? (1) 4.5 x 10ʻ kg•m/s, east (3) 2.7 × 10° kg•m, east (2) 4.5 × 10ʻkg•m/s, west (4) 2.7 x 10° kg•m, west 9. A net force of 12 newtons acting north on an object for 4.0 seconds will produce an impulse of :- (1) 48 kg-m/s north (3) 3.0 kg-m/s north (2) 48 kg-m/s south (4) 3.0 kg-m/s south 10. A force of 10. newtons acts on an object for 0.010 second. What force, acting on the object for 0.050 second, would produce the same impulse? (1) 1.0 newton (2) 2.0 newtons (3) 5.0 newtons (4) 10. newtons 11. A 2-kilogram object traveling 10 meters per second north has a perfect elastic collision with a 5-kilogram object traveling 4 meters per second south. What is the total momentum after collision? (1) 0 kg-m/s (2) 20 kg-m/s north (3) 20 kg-m/s south (4) 40 kg-m/s east 12. A 1.0-kilogram mass changes speed from 2.0 meters per second to 5.0 meters per second. The change in the object's momentum is (1) 9.0 kg-m/s (2) 21 kg-m/s (3) 3.0 kg-m/s (4) 29 kg-m/s 13. A 15-newton force acts on an object in a direction due east for 3.0 seconds. What will be the change in momentum of the object? (1) 45 kg-m/s due east (3) 5.0 kg-m/s east (2) 45 kg-m/s west (4) 0.20 kg-m/s west
Transcribed Image Text:7. Two disk magnets are arranged at rest on a fricitonless horizontal surface as shown in the diagram below. When the string holding them together is cut, they move apart under a magnetic force of repulsion. When the 1.0-kilogram disk reaches a speed of 3.0 meters per second, what is the speed of the 0.5-kilogram disk? String 1.0 kg 0.5 kg (1) 1.0 m/s (2) 1.5 m/s (3) 3.0 m/s (4) 6.0 m/s 8. What is the momentum of a 1.5 × 10³-kilogram car as it travels at 30. meters per second due east for 60. seconds? (1) 4.5 x 10ʻ kg•m/s, east (3) 2.7 × 10° kg•m, east (2) 4.5 × 10ʻkg•m/s, west (4) 2.7 x 10° kg•m, west 9. A net force of 12 newtons acting north on an object for 4.0 seconds will produce an impulse of :- (1) 48 kg-m/s north (3) 3.0 kg-m/s north (2) 48 kg-m/s south (4) 3.0 kg-m/s south 10. A force of 10. newtons acts on an object for 0.010 second. What force, acting on the object for 0.050 second, would produce the same impulse? (1) 1.0 newton (2) 2.0 newtons (3) 5.0 newtons (4) 10. newtons 11. A 2-kilogram object traveling 10 meters per second north has a perfect elastic collision with a 5-kilogram object traveling 4 meters per second south. What is the total momentum after collision? (1) 0 kg-m/s (2) 20 kg-m/s north (3) 20 kg-m/s south (4) 40 kg-m/s east 12. A 1.0-kilogram mass changes speed from 2.0 meters per second to 5.0 meters per second. The change in the object's momentum is (1) 9.0 kg-m/s (2) 21 kg-m/s (3) 3.0 kg-m/s (4) 29 kg-m/s 13. A 15-newton force acts on an object in a direction due east for 3.0 seconds. What will be the change in momentum of the object? (1) 45 kg-m/s due east (3) 5.0 kg-m/s east (2) 45 kg-m/s west (4) 0.20 kg-m/s west
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