Chapter 3: Force and Momentum 1. What is "Force"? What are balanced and unbalanced forces? What does "net force" mean? 2. Define each of Newton's Three Laws of Motion. 3. Which of Newton's three laws is the "law of inertia"? 4. What is friction, and how does that affect force? 5. Which of Newton's three laws is F=ma ? 6. What is the force of gravity? What is the value for the force of gravity? If an object were dropped from the top of a building, at what acceleration would the object fall? 7. What is Newton's Law of Universal Gravitation? How does distance between objects and the mass of objects affect the gravitational force? 8. In Newton's Law of Universal Gravitation, which variable (distance or mass) has a greater affect on gravitational force between two objects? 9. What is weight? What is the equation for weight? Where would you weigh more, on Jupiter, Earth, or the Moon? Why? Where would you weigh the least? 10. What is terminal velocity? Why do heavier objects fall faster than lighter objects? 11. What is momentum and how is it calculated? What is the Conservation of Momentum? Is kinetic energy conserved in an elastic or inelastic collision? 12. What is pressure? How is it calculated? What can create variations in pressure? 13. What is Pascal's Principle? Archimedes Principle? Bernoulli's Principle? 14. Two men pull on a cart with a mass of 90kg. If one man pulls 140N to the right, and the other man pulls 195N to the left, then find the magnitude and direction of the