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Matter & Interactions 2nd ed. Practice Problems	Aaron Titus \| High Point University
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I. Modern Mechanics (89)

1 Interactions and Motion (21)

2 The Momentum Principle: Impulse and Momentum Change (18)

3 The Momentum Principle: Non-constant Forces (7)

4 Contact Forces and the Momentum Principle (14)

5 The Energy Principle (11)

6 Energy in Macroscopic Systems (5)

7 Energy Quantization (2)

8 Multiparticle Systems (3)

9 Collisions (2)

9.1 Internal interactions in collisions (0)

9.2 Elastic and inelastic collisions (1)

9.3 A head-on collision of equal masses (0)

9.4 Head-on collisions between unequal masses (1)

9.5 Scattering: Collisions in 2-D and 3-D (0)

9.6 Discovering the nucleus inside atoms (0)

9.7 *Distribution of scattering angles (0)

9.8 Relativistic momentum and energy (0)

9.9 Inelastic collisions and quantized energy (0)

9.10 Collisions in other reference frames (0)

10 Angular Momentum (6)

11 Entropy: Limits on the Possible (0)

12 Gases and Engines (0)

Questions and Solutions

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1920001 A "rear-end" collision of two carts on a track. 1920001
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In the lab, a 1.0 kg cart traveling in the +x direction with a speed of 0.5 m/s collides with a 2.0 kg cart that is moving in the +x direction at 0.2 m/s. If the velocity of the more massive cart after the collision is 0.3 m/s, what is the change in internal energy of the system of the two carts?

1820001 Elastic collision of an alpha particle and an oxygen nucleus. 1820001
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A car of mass 500 kg and a truck of mass 1200 kg are moving directly toward each other at the same speed of 20 m/s. Define the +x direction to the direction of the car. What is the velocity of the center of mass of the system, defined to be the car and truck? At the moment when the vehicles are 100 m apart, what is the location of the center of mass of the system? Treat the vehicles as point particles.

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