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Understanding Newton's Second Law of Motion

Learn about the relationship between force and speed, Newton's Laws, and practice force problems. Get ready for quizzes and interactive activities.

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Understanding Newton's Second Law of Motion

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  1. 8/29/18 • Agenda LT: Newton’s 2nd law • LT: I can explain the relationship between the force that acts on objects and the resulting change in speed. • Sponge: Answer the question on the top of notebook page 39! (LOL means "line of learning”)

  2. Check HW Things to do:

  3. Video clip review • https://huzzaz.com/collection/forces-and-interactions?hzv=510208

  4. Copy the notes on NB 40. Write carefully and leave room for more!

  5. 9/4/18 • Agenda LT: Newton’s 2nd law • LT: I can explain the relationship between the force that acts on objects and the resulting change in speed. • Sponge: Describe Newton’s 2nd Law. • HW: Force Practice

  6. To Do… • Unfundraiser forms • Absent students missing work • No name papers • Sponge/LT/Exit papers • Newton’s Laws quiz next week.

  7. Pushes & Pulls NB 45

  8. Pushes & Pulls NB 46

  9. Practice Force Problems - Notes • Write the number, arrow direction, and BALANCED or UNBALANCED.

  10. Performance Assessment – Forces and Interactions (Name and date) • 1. Which is the correct final force?

  11. I place a notecard on a cup with a coin. I flick the notecard away. Which is true if I correctly demonstrate Newton’s 1st Law? • The coin and card fly away. • The card flies away but the coin falls in the cup. • I push with the same force on a 30 pound box and a 40 pound box. Which will accelerate MORE? A) 30 pound box B) 40 pound box

  12. 4. Force is measured in _____________. (Grams, Pounds, or Newtons) 5. _____________ forces cause movement. (Balanced or Unbalanced)

  13. Add to your index… • Friction: force pushing in the opposite direction of the motion that resists motion

  14. Force notes continued NB 42… • Net force is balanced with zero Newtons since the mass isn’t moving. • Net force is unbalanced with the opposing force being greater which moves the mass.

  15. Review Force Practice sheet

  16. Exit Slip/Expectations • Place Sponge/Exit sheet in the class basket. • NB/folder away in class crate. • Clean your area. • Gather personal belongings. • Return borrowed pencils: you will not be allowed to borrow another one until this is done. • Be seated until dismissed.

  17. 9/5/18 • Agenda LT: Forces • LT: I can explain the relationship between forces and acceleration. • Sponge: Provide an example of Newton’s 1st Law and an example of Newton’s 2nd law.

  18. To do… • Check HW • Tonight’s HW: Response sheet: Force • 621: Finish lab • All sections: discuss lab and then apply conclusions to paper models.

  19. Newton’s 2nd Law NB 69-70 (621/622?) • Highlight main ideas

  20. 9/6/18 • Agenda LT: Force and speed • LT: I can explain the relationship between the force that acts on an object and the resulting change in speed. • Sponge: An unbalanced force is acting on a box. Is it moving? Why?

  21. To Do… Sub days behavior expectation: • Friday: Bill Nye (5 facts on lined paper) and graphic organizer • Monday: Science Max (describe the experiments and how they relate to Newton’s Laws)

  22. To do… • Check HW • Quiz Tuesday over Newton’s Laws. Review your notes about 1st, 2nd, and 3rd laws, acceleration, balanced and unbalanced forces (study guide).

  23. Add to your index! • Newton’s Second Law: f = m a Force = Mass times Acceleration

  24. Force Foldables

  25. Force Foldables

  26. Force Foldables

  27. Force Foldables

  28. Force Foldable When two equal forces act on an object in opposite directions.

  29. Force Foldable When two forces are unequal in size and are moving in opposite directions.

  30. Force Foldable

  31. Real Life Example • Which object requires less force to move?

  32. Real Life Example • Which object requires less force to move?

  33. Real Life Example • Which object will accelerate the most if I apply the same force to both?

  34. Real Life Example • Which object will accelerate the most if I apply the same force to all of them?

  35. Real Life Example

  36. Real Life Example

  37. Newton’s 3rdLaw (621/622) • First…Popcorn reading! Highlight main ideas. Then we’ll answer the questions together. NB page 86 • Second…Lets work through the 4 stations and explore examples of Newton’s Third Law.

  38. Bow and Arrow Example • https://www.ngssphenomena.com/#/arrow-vs-concrete/ • Based on the reading, why did this happen?

  39. Newton’s 3rd Law • Second…Lets work through the 4 stations and explore examples of Newton’s Third Law. NB page 81.

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