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MMLU-Pro / 9204 / A small cart of mass m is initially at rest. It collides elastically with a…

Problem

Answer published by the source. Consult the official source to check your work against its answer.

question

A small cart of mass m is initially at rest. It collides elastically with a large cart of mass 4m and velocity v. The large cart loses half its kinetic energy to the little cart. The little cart now has a velocity of

category

physics

options

  1. 0.5v
  2. 0.7v
  3. 4v
  4. 3v
  5. 2v
  6. 5v
  7. 1.7v
  8. 1.2v
  9. 1.41v
  10. v

src

ori_mmlu-high_school_physics

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Source and history

Official source

initial import