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ARC-Challenge / Mercury_402207 / A 60-kg man and a 25-kg boy, both on roller skates, push off of each other using…

Problem

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

question

A 60-kg man and a 25-kg boy, both on roller skates, push off of each other using their hands. Which of these describes the motion of the two people?

choices

  • The man moves farther and faster than the boy.
  • The boy moves farther and faster than the man.
  • The man moves farther but the same speed as the boy.
  • The boy moves faster but the same distance as the man.

Discussion

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Source and history

Official source

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