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פתור תרגול זה עכשיו
Force and Motion LT7
  • 1. What type of energy is found at the top of the highest hill on a roller coaster?
A) Kinetic
B) Potential
C) Both Kinetic and Potential
D) Neither
  • 2. Which of the following has more inertia?
A) Cart with 2 passengers
B) Cart with 12 passengers
C) An empty cart
D) Cart with 1 passenger
  • 3. What force pulls the roller coaster from the top of the track to the bottom of the track?
A) Inertia
B) Magnetism
C) Friction
D) Gravity
  • 4. How would REDUCING friction affect the acceleration and speed of your roller coaster?
A) It would slow it down
B) No effect
C) It would stop it
D) It would go faster/farther
  • 5. If your roller coaster travels a total of 1500 meters in 3 minutes, what is its average speed?
A) 4500m/min
B) 500m/min
C) 0.002m/min
D) 600m/min
  • 6. What keeps your marble from falling off the track as it completes a loop?
A) Gravity
B) Magnetism
C) Friction
D) Centripetal force
  • 7. Why is friction known as an OPPOSING force?
A) It changes the speed of an object
B) Opposites attract
C) Objects rub against each other
D) Objects are pulled toward each other
  • 8. Why is gravity known as a force of ATTRACTION?
A) It affects all matter
B) Objects rub against each other
C) Objects are pulled toward each other
D) It depends on mass and distance
  • 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) 1st class lever
C) 3rd class lever
  • 11. A fixed pulley changes the amount of effort required to lift an object.
A) FALSE
B) TRUE
  • 12. A moveable pulley changes the amount of effort required to life an object.
A) TRUE
B) FALSE
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  • 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) As the length of the ramp increases, the amount of force needed decreases.
C) The amount of force needed to move an object never changes as you move a particular item.
D) It is easier to move objects on a cart than it is to move them by hand.
תלמידים שפתרו תרגול זה פתרו גם :
Force & motion
Physics Review Bank
Forces review (from textbook)
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