1 / 23

Weight: More Practice

Practice using EXP button for large numbers, understand Newton's 2nd Law for forces on objects, solve acceleration examples, and calculate net forces efficiently.

danielrbrown
Download Presentation

Weight: More Practice

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Weight: More Practice Enter very large or very small numbers into your calculator using the EXP button: 5.356 EXP -26

  2. Weight: More Practice

  3. Weight: More Practice

  4. Newton’s 2nd Law of Motion: Student Learning Goal The student will be able to state Newton’s 2nd Law and apply it in qualitative and quantitative terms to explain the effect of forces acting on objects. (B3.4)

  5. Newton’s 2nd Law of Motion and Acceleration

  6. Newton’s Second Law of Motion If the net force is not zero, the object will be accelerated in the direction of the net force.

  7. Newton’s Second Law Example Example: A weightlifter lifts a 165-kg weight by exerting a force of 1.8 kN [up]. The force of gravity on the object is 1.6 kN [down]. Draw a FBD of the weight. What is the net force on the weight? What is the acceleration of the weight?

  8. Newton’s Second Law Example 1.8 kN 1.6 kN

  9. Newton’s Second Law Example The net force is 0.2 kN [up]. 1.8 kN 1.6 kN

  10. Newton’s Second Law Example What is the acceleration of the weight?

  11. Newton’s Second Law Example What is the acceleration of the weight?

  12. Newton’s Second Law Example What is the acceleration of the weight?

  13. Newton’s Second Law Example What is the acceleration of the weight?

  14. Newton’s Second Law Example What is the acceleration of the weight?

  15. Example with the Equations of Motion A car is travelling at 25 m/s [forward] when the driver slams on the brakes and stops the car in 3.0 s. Calculate (a) the acceleration of the car and (b) the net force needed to cause that acceleration if the mass of the car is 1200 kg.

  16. Example with the Equations of Motion A car is travelling at 25 m/s [forwards] when the driver slams on the brakes and stops the car in 3.0 s. Calculate (a) the acceleration of the car.

  17. Example with the Equations of Motion A car is travelling at 25 m/s [forwards] when the driver slams on the brakes and stops the car in 3.0 s. Calculate (a) the acceleration of the car.

  18. Example with the Equations of Motion A car is travelling at 25 m/s [forwards] when the driver slams on the brakes and stops the car in 3.0 s. Calculate (a) the acceleration of the car.

  19. Example with the Equations of Motion A car is travelling at 25 m/s [forwards] when the driver slams on the brakes and stops the car in 3.0 s. Calculate (a) the acceleration of the car.

  20. Example with the Equations of Motion A car is travelling at 25 m/s [forwards] when the driver slams on the brakes and stops the car in 3.0 s. Calculate (a) the acceleration of the car. or 8.3 m/s2 [backward]

  21. Example with the Equations of Motion Calculate (b) the net force needed to cause that acceleration if the mass of the car is 1200 kg.

  22. Example with the Equations of Motion Calculate (b) the net force needed to cause that acceleration if the mass of the car is 1200 kg. or 10 000 N [backward]

  23. More Practice Newton’s 2nd Law of Motion Lab

More Related