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MMLU-Pro / 9694 / A boy leaning over a railway bridge 49 ft high sees a train approaching with…

Problem

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

question

A boy leaning over a railway bridge 49 ft high sees a train approaching with uniform speed and attempts to drop a stone down the funnel. He releases the stone when the engine is 80 ft away from the bridge and sees the stone hit the ground 3 ft in front of the engine. What is the speed of the train?

category

physics

options

  1. 55 mph
  2. 20 mph
  3. 30 mph
  4. 60 mph
  5. 40 mph
  6. 35 mph
  7. 50 mph
  8. 25 mph
  9. 15 mph
  10. 45 mph

src

stemez-Physics

Discussion

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Source and history

upstream_id / Original problem ID
9694
task_id
01c6a602-23a2-539a-8dfa-708c68d6a8c4
task_key
default--test--9694
task_revision_id
1
config / split
default / test

Official source

initial import