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Motion Quiz
供稿人: Garcia
  • 1. Push or pull that causes an object to move, stop or change direction
A) friction
B) gravitation
C) force
D) magnetism
E) work
  • 2. Use the force to move an object through a distance
A) friction
B) magnetism
C) gravitation
D) work
E) force
  • 3. Force that pulls all objects toward each other
A) magnetism
B) work
C) friction
D) gravitation
E) force
  • 4. forces equal in size and opposite in direction
A) work
B) balanced forces
C) unbalanced forces
D) magnetism
E) force
  • 5. amount of work done for each unit of time
A) force
B) gravitation
C) work
D) power
E) net force
  • 6. Value of combined forces on an object
A) work
B) net force
C) force
D) power
E) friction
  • 7. Opposing forces of which one force is greater than the other
A) power
B) unbalanced forces
C) friction
D) balanced forces
E) work
  • 8. Which of the following is not a force?
A) gravity
B) friction
C) newton
D) magnetism
  • 9. The first law of motion says that an object at rest will remain at rest unless______
A) a nearby star acts on it
B) an outside force acts on it
C) it is placed on a flat surface
D) it continues in a straight line
  • 10. According to the third law of motion, for every action there is ________
A) an equal and opposite reaction
B) a greater force pushing on it
C) a movement in all directions
D) a force sending it backward
  • 11. When you observe an object, how do you know if it is moving?
A) its mass and velocity changes
B) its momentum changes
C) its frame of reference changes
D) Its position changes
  • 12. What do the laws of motion explain?
A) Why all moving objects eventually stop moving
B) how frame of reference influences movement
C) the relationship between the four basic elements
D) The movement of objects on Earth and in space
  • 13. Inertia explains why_____
A) People in a car move forward in their seats when the car stops quickly
B) friction can be overcome for all objects
C) the ground pushes against your feet when you run
D) gravitational forces are stronger on Earth than on the moon or other satellites
  • 14. An object in an______ travels around another object as a result of inertia and gravity working together
A) law of universal gravitation
B) inertia
C) orbit
D) reaction force
  • 15. According to the _____, all objects are attracted to all other objects
A) action force
B) inertia
C) Law of Gravitation
D) orbit
E) reaction force
  • 16. When an object exerts a force on you, it is called ______
A) Reaction force
B) action force
C) orbit
D) inertia
  • 17. The ______ of an object is the distance it travels in a given period of time.
A) speed
B) position
C) velocity
D) momentum
E) acceleration
  • 18. To measure the movement of an object, one must first locate the _______
A) acceleration of that object
B) position of that object
C) momentum of that object
D) velocity of that object
E) the speed of that object
  • 19. The term used to describe the speed of an object in a certain direction is _____.
A) momentum
B) speed
C) velocity
D) acceleration
E) position
  • 20. A truck that is moving at a high rate of speed is difficult to stop because of its _______ which is a product of its velocity and mass.
A) speed
B) acceleration
C) momentum
D) velocity
E) position
  • 21. Conservation of momentum explains how
A) a spacecraft can travel in space for thousands of years
B) trucks slow down when they are travelling uphill
C) a ball thrown into the air always falls back toward Earth
D) a pole can be knocked down when a moving car hits it
  • 22. A shovel is a compound machine made up of______
A) a wedge and a pulley
B) a lever and a wedge
C) A screw and a wedge
D) a pulley and a screw
  • 23. Which of the following can change the size or direction of a force?
A) a magnet
B) speed
C) a machine
D) friction
  • 24. What do magnets have that acts on objects without touching them?
A) a machine
B) a power
C) a current
D) a force
  • 25. Force that opposes motion when two surfaces rub against each other
A) power
B) work
C) force
D) magnetism
E) friction
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