Simple Machines

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Across
  1. 2. things upward •
  2. 3. occurs when a force acts on an object to move it some distance from the start point. •
  3. 4. 10 Clues: it is in a bike •
  4. 6. a cylinder with a inclined plane around it •
  5. 7. is a slanted platform •
Down
  1. 1. a triangular piece •
  2. 2. indicates how well its input energy is converted to useful output energy or work. •
  3. 3. the rate at which work is done. •
  4. 5. is used on a bike •