HW06-problems - markowitz (am45362) HW06 distler (56295) 1...

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Unformatted text preview: markowitz (am45362) HW06 distler (56295) 1 This print-out should have 20 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points A spring is compressed between two cars on a frictionless airtrack. Car A has four times the mass of car B, M A = 4 M B , while the springs mass is negligible. Both cars are initially at rest. When the spring is released, it pushes them away from each other. Which of the following statements correctly describes the velocities, the momenta, and the kinetic energies of the two cars after the spring is released? Note : Velocities and momenta are given below as vectors. 1. vectorv A =- 2 vectorv B vectorp A =- 8 vectorp B K A = 16 K B 2. vectorv A = + 1 5 vectorv B vectorp A = + 4 5 vectorp B K A = 4 25 K B 3. vectorv A =- 1 3 vectorv B vectorp A =- 2 3 vectorp B K A = 4 3 K B 4. vectorv A =- vectorv B vectorp A =- 4 vectorp B K A = 16 K B 5. vectorv A =- vectorv B vectorp A =- vectorp B K A = K B 6. vectorv A =- 4 vectorv B vectorp A =- 16 vectorp B K A = 64 K B 7. vectorv A = + 1 4 vectorv B vectorp A = + vectorp B K A = 4 K B 8. vectorv A =- 1 2 vectorv B vectorp A =- 2 vectorp B K A = K B 9. vectorv A =- 1 4 vectorv B vectorp A =- vectorp B K A = 1 4 K B 10. vectorv A =- 1 4 vectorv B vectorp A =- vectorp B K A = 4 K B 002 10.0 points Two objects of mass 9 g and 6 g , respectively, move parallel to the x-axis, as shown. The 9 g object overtakes and collides with the 6 g object. Immediately after the collision, the y-component of the velocity of the 9 g object is 6 m / s upward. v i 9 g v i 6 g What is the y-component of the velocity vectorv of the 6 g object immediately after the collision?...
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This note was uploaded on 11/29/2011 for the course PHY 302K taught by Professor Kaplunovsky during the Spring '08 term at University of Texas at Austin.

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HW06-problems - markowitz (am45362) HW06 distler (56295) 1...

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