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Forces and Motion Cornell Notes

Dive into the world of forces and motion with Newton's Laws explained. Learn about friction, types of motion, and how forces influence movement. Discover why objects stay still or keep moving and calculate force using Newton's formulas.

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Forces and Motion Cornell Notes

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  1. Forces and Motion Cornell Notes • EQ: How does force influence motion?

  2. What is force? • Force is a push or pull needed to start an object moving. • The force has to be stronger than the object • Think about a door. The door will stay in the same place unless something like your hand or the wind pushes or pulls it closed.

  3. Question:Is it possible for an ant to move a brick? • Yes • No

  4. What is Friction? A force that resists movement. For example, ice is slippery, however, dirt is not very slippery and has lots of friction.

  5. What is Motion? Motion occurs when an object moves from one place to another. For motion to occur there has to be a force from on place to another. • You can describe motion with 3 types of words: • Type of motion • Speed • Direction

  6. Newton’s Laws of Motion How do laws of motion explain force?

  7. Who was Newton? • Sir Isaac Newton (1642 -1726) was an English scientist who is best known for the discovering gravity and studying motion and force. • We measure Force in Newtons (N)

  8. What are Newton’s 3 Laws of Motion? • 1. Law of Inertia • 2. F=ma • 3. Action-Reaction

  9. 1st Law of Motion (Law of Inertia) An object that is not in motion will remain stopped unless pushed or pulled by a force. An object in motion will keep moving unless a force pulls or pushes it. .

  10. Inertia Example

  11. What is this unbalanced force that acts on an object in motion? Friction! • There are four main types of friction: • Sliding friction: two objects sliding on one another • Rolling friction: an object rolling over a surface • Fluid friction (air or liquid): air or water resistance • Static friction: initial friction when moving an object

  12. Sliding Friction

  13. Rolling Friction

  14. Fluid Friction

  15. 2nd Law F = m x a

  16. 2nd Law The net force of an object is equal to the mass multiplied by the acceleration

  17. Force = mass x acceleration • Force is measured in Newtons (N) • Mass is measured in Kilograms (Kg) • Acceleration is measured in meters per seconds squared m/s/s

  18. 2nd Law

  19. 3rd Law • For every action, there is an equal and opposite reaction.

  20. Summary Questions • 1. A push or a pull is a ___________________. • 2. What are the 3 laws of Motion? • 3. __________________ is measured in Newtons. • 4. Calculate Force of a 32g ball thrown at an acceleration of 10m/s2?

  21. Check your answers • 1. A push or a pull is a force. • 2. What are the 3 laws of Motion? • 1. Law of Inertia • 2. F=ma • 3. Action-Reaction • 3. Force is measured in Newtons. • 4. Calculate Force of a 32g ball thrown at an acceleration of 10m/s2? 32g x 10m/s2 =320 N

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