1. September 26, 2012 Come in quietly Sit Down
Prepare to answer the Do Now
Copy these in your green folder

2. Time Left … 00 19 20 18 16 21 17 23 27 28 26 25 15 24 22 13 04 05 03 02 00 01 06 07 11 12 10 09 08 14 29 50 51 49 48 46 47 52 53 58 59 57 56 54 55 30 45 35 36 34 33 31 32 44 37 42 43 38 41 40 39
Back to Timer

3. Definition
Examples
Non Examples
Characteristics
Vocabulary Term
Define the term.
Describe what it looks like.
List the word here.
List examples of the term.
List what is not an example of the term.

4. Definition
Examples
Non Examples
Characteristics
PULLEY .

5. Calculate the amount of work done.
 A young boy applied a force of 2,000 newtons on his St. Bernard dog who is sitting on the boy's tennis shoes.  He was unable to move the dog.  How much work did he do trying to push the dog?

6. If a simple machine decreases the input force required, it does so by
A. changing the direction of the input force.
B. increasing the amount of energy used to accomplish the work.
C. increasing the distance over which the input force is exerted.
D. decreasing the amount of work that is required.

7. Calculate the work for the problem below.
1. Calculate the amount of work done when moving a 567N crate a distance of 20 meters

8. Calculate the work for the problem below.
 A frontend loader needed to apply 13 newtons of force to lift a rock .  The rock was transported 10 miles.

9. Calculate the work for the questions below.
A boy 135N, threw a baseball 20 feet.
A woman 180 N, jogged 7 miles at the park.

10. List all of the simple machines you see in the picture.

11. Screw Incline plane Wedge Wheel and axle
A _____ is an inclined plane that is made into a spiral. Like an inclined plane, it allows the application of a small force over a large distance to accomplish a task requiring a larger force over a smaller distance
Screw
Incline plane
Wedge
Wheel and axle

12. ladder Pencil sharpner Knife bicycle
List the work input and work out put of each of the machines.
ladder
Pencil sharpner
Knife
bicycle

13. Can a machine create work output without any work input being done? Why?

14. This is an example of what simple machines?
Explain ` how that part is a simple machine.

15. Draw and label the parts of a lever.

16. ______________ lifts objects from one elevation to another.
Incline plane
Screw
Fulcrum
Lever

17. Pulley Lever Screw All of the above
What simple machines are used in a bicycle.
Pulley
Lever
Screw
All of the above

18. How can we relate hurricane Isaac to Newton’s Laws of Motion
How can we relate hurricane Isaac to Newton’s Laws of Motion ? List at least 4 ways.

19. How is terminal velocity and velocity different?

20. As force decreases and mass increases, acceleration ___________
Stays the same
neither

21. Create a Venn Diagram to compare and contrast Newton’s first and second law of motion.
1st Law
2nd Law

22. Gravity Friction Inertia Matter
_____ is resting or still objects will stay that way until a force moves it. Moving objects will move forever until a force stops it.
Gravity
Friction
Inertia
Matter

24. Give two examples of friction?

25. How does friction affect the temperature of objects?

26. _______ push and pulls and causes all things to happen.
Gravity
Force
Velocity
Terminal velocity

27. A water balloon is dropped from a 8 foot incline
A water balloon is dropped from a 8 foot incline. The balloon hits the ground after 3.2 seconds.
What is the velocity of the balloon?
What formula is used to determine the velocity of the balloon?

28. How do you determine the velocity of a falling object?

29. A boulder was dropped from the Leaning Tower of Pisa
A boulder was dropped from the Leaning Tower of Pisa. The bolder fell to the ground after 9.4 seconds. What is the velocity of the boulder? T= G= V=

30. Compare and contrast Aristotle and Galileo

31. The officer in the picture below is checking the ____________ of the passing cars.
Acceleration
Velocity
Force
Color

32. Sir Isaac Newton Galileo Galilei Aristotle Albert Einstine
Which old dead scientist was incorrect in his theory of gravity?
Sir Isaac Newton
Galileo Galilei
Aristotle
Albert Einstine

33. Why did Galileo Galilei test Aristotle’s theory on gravity?
Directions: Answer in complete sentences.
Why did Galileo Galilei test Aristotle’s theory on gravity?

34. List 3 facts about gravity.
_______________

35. _____ is a natural attraction that exists between two objects.
Gravity
Force
Love
mass