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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)

1250001 Projectile motion with no air resistance 1250001
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Question

A 0.4-kg soccer ball is kicked from a location m (on the ground) with initial velocity m/s. The ball's speed is low enough that air resistance is negligible. Therefore, you can assume that the net force is constant. (Note: the +y direction is defined to be perpendicular to the ground and upward, and the x-z plane is the soccer field. t = 0 is defined to be the instant the ball leaves the foot.) What is the velocity and position of the ball at t = 0.3 s after being kicked? What is the maximum height reached by the ball?