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“DO NOW” FOR TUESDAY, FEBRUARY 4 TH

“DO NOW” FOR TUESDAY, FEBRUARY 4 TH. WHAT TYPE OF FORCES ARE NECESSARY IN ORDER FOR AN OBJECT TO MOVE? THERE ARE TWO POSSIBLE ANSWERS. “Do Now” for Thursday!. Draw a balanced and an unbalanced force. Illustrate the net force in each drawing. Forces = Pushes & Pulls!.

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“DO NOW” FOR TUESDAY, FEBRUARY 4 TH

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  1. “DO NOW” FOR TUESDAY, FEBRUARY 4TH WHAT TYPE OF FORCES ARE NECESSARY IN ORDER FOR AN OBJECT TO MOVE? THERE ARE TWO POSSIBLE ANSWERS.

  2. “Do Now” for Thursday! Draw a balanced and an unbalanced force. Illustrate the net force in each drawing.

  3. Forces = Pushes & Pulls!

  4. We know that the strength of a force is measured in SI units called Newtons…After Sir Isaac Newton. 1 Newton is equal to about 102 grams (0.22481 pounds).

  5. Sir Isaac Newton

  6. Net Force is the sum or difference of the forces on an object. Net force = 300N Green Team Wins!

  7. What is a NON-ZERO FORCE? Same as an unbalanced force! Non-zero = Unbalanced = Movement!

  8. What is a ZERO FORCE? Same as a balanced force! Zero force = Balanced = NO Movement

  9. Balanced?

  10. Balanced?

  11. Balanced?

  12. So what is WORK??

  13. Work is done when an object is moved in the direction in which a force is applied to it.

  14. Is There Work Without Motion? NOPE! No Work Here!

  15. Carrying your backpack to school might seem like work - but it’s not! ^ ^^FORCE DIRECTION    The force must be in the direction the object moves!!!

  16. Pushing, dragging or pulling your backpack = work!

  17. FORMULA FOR WORK! Work = Force X Distance (Newtons) (Meters) (Joule) Work is calculated as the amount of force applied to an object times the distance the object moves. The term JOULE is used to describe a unit of work.

  18. FYI – A 500N runner in the Empire State Building’s “Run-Up-Race” creates 160,000 joules of work while climbing the 1,576 steps. Enough work to lift an elephant over 3 meters!

  19. What is Power?

  20. FORMULA FOR POWER! Power = Work OR Power = Force X Distance Time Time Power is described in Joules/Second units called WATTS. One joule of work done in one second = one watt of power.

  21. A watt is a very small unit! Power is often measured in larger units such as Kilowatts (Kw) or Horsepower (hp). 1 Kilowatt = 1,000 watts 1 Horsepower = 746 watts The average car has 110 – 150 hp. The average semi-truck has 200-400 hp A drag race car can have over 5,000 hp The average horse has 22.5 hp.

  22. Try some Equations!

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