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Force and Motion LT7
Con il contributo di: Pohly
  • 1. What type of energy is found at the top of the highest hill on a roller coaster?
A) Potential
B) Both Kinetic and Potential
C) Kinetic
D) Neither
  • 2. Which of the following has more inertia?
A) Cart with 12 passengers
B) Cart with 1 passenger
C) An empty cart
D) Cart with 2 passengers
  • 3. What force pulls the roller coaster from the top of the track to the bottom of the track?
A) Magnetism
B) Gravity
C) Friction
D) Inertia
  • 4. How would REDUCING friction affect the acceleration and speed of your roller coaster?
A) It would slow it down
B) It would go faster/farther
C) No effect
D) It would stop it
  • 5. If your roller coaster travels a total of 1500 meters in 3 minutes, what is its average speed?
A) 4500m/min
B) 0.002m/min
C) 600m/min
D) 500m/min
  • 6. What keeps your marble from falling off the track as it completes a loop?
A) Centripetal force
B) Gravity
C) Friction
D) Magnetism
  • 7. Why is friction known as an OPPOSING force?
A) Opposites attract
B) It changes the speed of an object
C) Objects are pulled toward each other
D) Objects rub against each other
  • 8. Why is gravity known as a force of ATTRACTION?
A) It affects all matter
B) It depends on mass and distance
C) Objects rub against each other
D) Objects are pulled toward each other
  • 9. Simple machines make work easier by?
A) Changing the size and/or direction of a force.
B) Changing the direction of the force
C) Changing the size of the force
  • 10. A fishing rod and swinging a bat are examples of?
A) 2nd class lever
B) 3rd class lever
C) 1st class lever
  • 11. A fixed pulley changes the amount of effort required to lift an object.
A) TRUE
B) FALSE
  • 12. A moveable pulley changes the amount of effort required to life an object.
A) TRUE
B) FALSE
  • 13. Which of the following conclusions can he make from his experiment about how to safely move the cart?
A) The taller the ramp, the more force you need to move the box.
B) It is easier to move objects on a cart than it is to move them by hand.
C) As the length of the ramp increases, the amount of force needed decreases.
D) The amount of force needed to move an object never changes as you move a particular item.
Studenti hanno provato anche :
Force & motion
Physics Review Bank
Forces review (from textbook)
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