Momentum8 Physics

# Momentum8 Physics - MOMENTUM 8 14 A B Answers to...

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M OMENTUM 8 Answers to Multiple-Choice Problems 8. A, D 11. B, D 14. A, B Solutions to Problems 8.1. Set Up: Use coordinates where is to the right. In (a) – (c) denote the two objects as A and B . In (d) call the third object C . Solve: (a) (b) (c) 8.2. Set Up: The signs of the velocity components indicate their directions. Call the objects A and B . Solve: (a) (b)

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(c) (d) 8.8. Set Up: Consider the system consisting of the two skaters. Assume the heavier skater ( B ) travels to the right and take this to be the direction. Solve: (a) There is no horizontal external force so The skaters are initially at rest so The lighter skater travels to the left at (b) The kinetic energy of the system was produced by the work the two skaters do on each other. 8.13. Set Up: Let be to the right. Solve: (a) says and (b)
and Reflect: The total momentum of the system is conserved but the total kinetic energy decreases. 8.22. Set Up:

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Momentum8 Physics - MOMENTUM 8 14 A B Answers to...

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