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ARC-Challenge / Mercury_414365 / A student is pushing a 20-kilogram box up a ramp. Which change will require the…

Problem

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question

A student is pushing a 20-kilogram box up a ramp. Which change will require the student to use less force to push the box?

choices

  • increasing the mass of the box
  • decreasing the length of the ramp
  • decreasing the steepness of the ramp
  • increasing the friction on the surface of the box

Discussion

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Source and history

Official source

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