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Updated: 12/1/2020
Unknown Story

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  • Motion!
  • Okay class. Today we’re going to learn about motion! Motion is a change in an object’s position over time.
  • A force is a push or a pull. Forces are measured in Newtons. A force can make objects move, if it’s an unbalanced force.
  • What’s an unbalanced force?
  • Oh sorry, I got ahead of myself. An unbalanced force is an unequal force in one direction. This causes an object to move in the direction of the force.
  • That clears things up. Thanks for teaching me about motion!
  • Another thing that affects the motion of objects is friction. Friction is a force that opposes motion between two surfaces that are in contact with each other.
  • How does friction relate to the motion of objects?
  • Good question! Well, friction slows down the motion of an object. For example, a ball rolling across a carpet will roll more slowly than a ball rolling across a hardwood floor.
  • Also, more than one force can act on an object. When two forces are acting on an object in the same direction, add the forces to determine their net force. When two forces are acting in different directions, subtract one from the other to find the net force. Any questions on motion?
  • I’m glad it helped! Now it’s time for recess. Off you go!
  • That clears things up. Thanks for teaching me about motion!
  • That clears things up. Thanks for teaching me about motion!
  • That clears things up. Thanks for teaching me about motion!
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