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Chapter 13
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Chapter 13

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  1. Chapter 13 Forces and Motion

  2. Gravity • Force of attraction • Dependent upon the masses of each object

  3. Mass vs Weight • Mass • Amount of matter in an object • Does not change in the universe • Measured in N -- newtons • Weight • Measure of gravitational force • Varies • Measured in kg or pounds

  4. Law of Universal Gravitation • All objects in the universe attract each other through gravitational force • Depends upon • Mass • Distance

  5. Acceleration and Mass

  6. Orbital Motion • Horizontal movement • Vertical movement

  7. Falling Objects: No Air Resistance

  8. Falling Objects: Air Resistance

  9. Newton’s First Law • An object at rest remains at rest, and an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.

  10. Inertia

  11. Newton’s Second Law • The acceleration of an object depends on the mass of the object and the amount of force applied.

  12. Newton’s Third Law • Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.

  13. Additional Terms to Know • Inertia • Terminal velocity • Free fall • Vacuum • Centripetal force