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4.) A spring is compressed by a distance d and launches a mass with a speed of 4 m/s just after the spring loses contact with the mass. The spring is compressed by 3d and the same mass is launched again. What is the new launch speed just after the spring loses contact with the mass? A) 3 m/s B) 4 m/s C) 8 m/s D) 12 m/s E) 36 m/s

4.) A spring is compressed by a distance d and launches a mass with a speed of 4 m/s just after the spring loses contact with the mass. The spring is compressed by 3d and the same mass is launched again. What is the new launch speed just after the spring loses contact with the mass? A) 3 m/s B) 4 m/s C) 8 m/s D) 12 m/s E) 36 m/s

Physics for Scientists and Engineers, Technology Update (No access codes included)
Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter9: Linear Momentum And Collisions
Section: Chapter Questions
Problem 9.57P: A particle is suspended from a post on top of a can by a light string of length L. as shown in...
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4.) A spring is compressed by a distance d and launches a mass with a speed of 4 m/s just after the spring loses contact with the mass. The spring is compressed by 3d and the same mass is launched again. What is the new launch speed just after the spring loses contact with the mass? A) 3 m/s B) 4 m/s C) 8 m/s D) 12 m/s E) 36 m/s 5.) You are observing the motion of two balls in a physics demo. One of the balls is 3 times more massive than the other. The lighter ball has 12 times less kinetic energy than the heavier ball. What is the ratio of the speeds of the two balls (i.e. Vlarge/Vsmall)? A) 0.25 B) 0.667 C) 0.5 D) 4 E) 2 6.) A friend is helping you move and is pulling a 100 kg refrigerator by a rope. The rope is secured around the fridge's center of mass, so it won't tip. Your friend is on the short side; they're pulling on the rope such that it makes a 10-degree angle below the horizontal. Which statement is true about the fridge's normal force? A) n>980 N B) n= 980 N C) n<980 N D) Not enough information to say
Transcribed Image Text:4.) A spring is compressed by a distance d and launches a mass with a speed of 4 m/s just after the spring loses contact with the mass. The spring is compressed by 3d and the same mass is launched again. What is the new launch speed just after the spring loses contact with the mass? A) 3 m/s B) 4 m/s C) 8 m/s D) 12 m/s E) 36 m/s 5.) You are observing the motion of two balls in a physics demo. One of the balls is 3 times more massive than the other. The lighter ball has 12 times less kinetic energy than the heavier ball. What is the ratio of the speeds of the two balls (i.e. Vlarge/Vsmall)? A) 0.25 B) 0.667 C) 0.5 D) 4 E) 2 6.) A friend is helping you move and is pulling a 100 kg refrigerator by a rope. The rope is secured around the fridge's center of mass, so it won't tip. Your friend is on the short side; they're pulling on the rope such that it makes a 10-degree angle below the horizontal. Which statement is true about the fridge's normal force? A) n>980 N B) n= 980 N C) n<980 N D) Not enough information to say
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