Which can change the direction of a downward…

Discussion in 'Biology' started by Arcane, Aug 20, 2016.

  1. Arcane

    Arcane New Member

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    Which can change the direction of a downward input force into an upward output force? A. Can opener B. Ax blade C. Crowbar D. Screw
     
  2. Sylvia

    Sylvia New Member

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    This would be a crowbar. If you have trouble understand this, just visualize what happens when you pry the lid of a box open with a crowbar. You push one end down, and the other end goes up.
     

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