1. 3 rd Period SI Introduction to Force Kiosk

2. What is Force? Force is when an object has been pushed or pulled and has been caused to interact with another object. To calculate force you use the equation: Force = mass * acceleration (F=m*a). Force is measured in Newtons Discovered mathematically by Sir Isaac Newton.

3. What is Force? (cont.) Force is push or pull of something Force has magnitude and direction By: Rohan Achar, Mackenzie Banks, Ronnie Parker Some examples of force are a pulley, two magnets, and a block falling to the ground.

4. The Newton The Newton, named after Isaac Newton, is the SI unit of force. It means how much force is provided to move one kilogram one meter per second per second. Sir Isaac Newton, the Newton’s namesake.

5. How are Newtons Measured? Newtons are calculated as 0.224809 pounds, commonly rounded to 0.225 pounds. The formula is 1N = 1 kg x 1m/s/s. An apple falling was part of one of Newton’s most famous discoveries: gravity!

6. balanced Force! Because the vertical forces on this car are balanced, it is moving neither up or down vertically. Balanced force is when an object is being acted upon by two different forces of the same magnitude in opposite directions

7. An object being acted upon by balanced force has a net force of zero and is considered to be in equilibrium. Balanced force doesn’t cause objects at rest to start moving or moving objects to slow down. Both constant speed and no motion are examples of balanced force. By Adam F, Debbie H, and Shashank R

8. Unbalanced Force By: Lindsey Jackson Katie Uhl Raghav Sharma

9. Unbalanced Force An individual force without a force of equal strength in an opposite direction It causes acceleration

10. Friction is the force resisting the relative motion of two surfaces in contact or a surface in contact with a fluid. By: Tanya Akl, Danielle Margheret, & Jessica Port

11. Mayday, Mayday! FRICTION PULLS THE OPPOSITE WAY AN OBJECT MOVES. FRICTION IS NOT FUNDAMENTAL SOURCE! FRICTION MUST BE FOUND BY EXPERIMENTATION!

12. Static Friction -Static Friction is when the force of friction is greater than the force that is pushing the object -Static friction is greater that kinetic friction -Without static friction, we wouldn’t be able to do many things we do in our everyday life. For example a table would move all over the place with out static friction.

13. By Erik Gustafson and Zach Ginis This picture is an example of stactic friction. If the applied force is even with the force of gravity and friction the object will not move.

14. KINETIC FRICTION -Occurs when two objects are moving while in contact with each other

15. Subtypes: 1.Sliding Friction When solids move against each other. - Book sliding on a table (The book eventually stops sliding) 2. Fluid Friction When solids move through a fluid. - Water spilling on the floor (The water stops moving eventually)

16. Use Lubricants Liquid Motor Oil Grease Solid Wax Gas Tiny holes on an air hockey table Replace sliding friction with rolling friction Smooth surfaces Group 8: Alyssa and Bethany

17. Increase roughness Create more traction Dry the surface Less slippery Increase weight of sliding object Increase amount of force pressing the 2 objects together **Increase the coefficient of friction