Forces and Newton's Laws in Action

Fundamentals of forces and Newton's laws through engaging visuals and explanations. Discover the concepts of direct forces, Newton's three laws, and free-body diagrams in an easy-to-understand format. Delve into the principles of inertia, acceleration, and action-reaction, illustrated with practical examples like rocket propulsion. Enhance your understanding of the physics behind motion and learn how these laws shape our world.

• Physics
• Forces
• Newtons Laws
• Inertia
• Acceleration

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Uploaded on Mar 04, 2025 | 0 Views

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Presentation Transcript

1. Forces and Newton s Laws Houston, We Have a Problem! Lesson

2. Direct Forces A force is a push or a pull. It is measured in Newtons (N)

3. Newtons First Law Law of Inertia an object at rest will remain at rest or an object will continue at constant velocity until acted on by some outside force.

4. Newtons Second Law The acceleration of an object is directly proportional to the net force on it and inversely proportional to its mass. F = ma

5. Newtons Third Law For every action, there is an equal reaction in the opposite direction. Rocket boosters thrust down and the shuttle goes up!

6. Free-Body Diagram: 1 Force Applied (Fa or Fthrust) FNet = Fa - Fo Force Opposing (Fo or Fg and Fdrag) ma = Fthrust - Fg - Fdrag The opposing force is the weight (or force due to gravity, Fg) and air drag of the rocket

7. Free-Body Diagram: 2 The rocket is decelerating FNet = Fa - Fo Force Opposing (Fo or Fg and Fdrag) ma = 0 - Fg - Fdrag The opposing force is the weight, Fg, and air drag of the rocket.

8. Free-Body Diagram: 3 Force Opposing (Fdrag) FNet = Fa - Fo ma = Fg - Fdrag Force Applied (Fg) The applied force is the weight, Fg