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Forces and Motion

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    Forces and motion review
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  • A push or pull on an object. It makes an object move, stop, change directions, speed up or slow down.
    Force
  •  15
  • A change in an object's position.
    Motion
  •  15
  • When a thing moves away from us, we ________ it.
    Push
  •  15
  • When a thing moves towards us, we _________ it.
    Pull
  •  15
  • Forces can be ________ or _________, which is what determines if an object is moving or still.
    balanced / unbalanced
  •  20
  • ________ forces are what cause motion.
    Unbalanced
  •  15
  • The speed and direction of an object's motion.
    Velocity
  •  15
  • A change in an object's velocity (slowing down or speeding up).
    Acceleration
  •  15
  • The person who described the relationship between force and motion.
    Isaac Newton
  •  15
  • An object at rest will stay at rest and an object in motion will stay in motion unless an outside force is acted upon it.
    Newton's First Law of Motion
  •  15
  • The force acted upon an object is equal to its mass times its acceleration.
    Newton's Second Law of Motion
  •  15
  • For every action, there is an equal and opposite reaction.
    Newton's Third Law of Motion
  •  15
  • An invisible force that pulls objects towards each other.
    Gravity
  •  15
  • The amount of matter in an object. It never changes.
    Mass
  •  15
  • Force exerted on an object's matter by gravity. It can change.
    Weight
  •  15
  • The more ______, the larger the force of _________.
    mass / gravity
  •  20