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Chapter 6: Force and Motion II

Chapter 6: Force and Motion II. Newton’s Laws. If no net force acts on a body, then the body’s velocity cannot change. The net force on a body is equal to the product of the body’s mass and acceleration.

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Chapter 6: Force and Motion II

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  1. Chapter 6: Force and Motion II

  2. Newton’s Laws • If no net force acts on a body, then the body’s velocity cannot change. • The net force on a body is equal to the product of the body’s mass and acceleration. • When two bodies interact, the forces on the bodies from each other are always equal in magnitude and opposite in direction.

  3. Static and Kinetic Friction Static frictional force Kinetic frictional force Skid marks are 290 m long! k = 0.6 and a = const. How fast was the car going when the wheels became locked?

  4. Drag force Terminal speed Drag coefficient C, air density , and effective cross-section A. Drag Force and Terminal Speed

  5. Uniform Circular Motion Centripetal acceleration Period Centripetal force

  6. Sample Problems 6.8, 6.9, 6.10

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