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Formative assessment questions for teaching physics

A2L Item 285

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The question for students:

Item285_fig1.gif

Two blocks with mass m2>m1 sit on a horizontal surface having friction. Both blocks are pulled with a constant speed, but v2 < v1, by a rope under tension. Which tension does the most work moving the block a distance D along the surface?

  1. T1
  2. T2
  3. Both do the same work.
  4. Cannot be determined.

Commentary for teachers:

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