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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)

2.1 System and surroundings (1)

2.2 The Momentum Principle (5)

2.3 Applying the Momentum Principle (3)

2.4 Updating position if momentum is changing (2)

2.5 Predicting motion: Constant force (2)

2.6 Problems of greater complexity (2)

2.7 Physical models (0)

2.8 Systems consisting of several objects (0)

2.9 Collisions: Negligible external forces (1)

2.10 Conservation of momentum (2)

2.11 *Derivation: Special case average velocity (0)

2.12 *Inertial frames (0)

2.13 *Velocity and momentum at high speeds (0)

2.14 *Measurements and units (0)

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)

10 Angular Momentum (6)

11 Entropy: Limits on the Possible (0)

12 Gases and Engines (0)

1290001 Change in momentum of Earth as a result of bouncing a superball. 1290001
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Question

Suppose that you measure the velocity of a 0.015-kg superball just before it hits the floor and find that its velocity is downward with a magnitude of 4.5 m/s. You also measure its velocity just after it hits the floor and find that it is upward with a magnitude of 3.9 m/s. What is the change in momentum of Earth as a result of the collision with the superball?