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MMLU-Pro / 10227 / A rocket has an initial mass of 2 × 10^4 kg, a mass ratio of 3, a burning rate…

Problem

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

question

A rocket has an initial mass of 2 × 10^4 kg, a mass ratio of 3, a burning rate of 100 kg/sec, and an exhaust velo-city of 980 m/sec. The rocket is fired vertically from the surface of the earth. How long after ignition of the engines will the rocket leave the ground?

category

physics

options

  1. 75 sec
  2. 180 sec
  3. 100 sec
  4. 50 sec
  5. 150 sec
  6. 250 sec
  7. 120 sec
  8. 200 sec
  9. 10 sec
  10. 300 sec

src

stemez-Mechanics

Discussion

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Source and history

upstream_id / Original problem ID
10227
task_id
136e2de3-7c97-57ad-8381-024313d4114c
task_key
default--test--10227
task_revision_id
1
config / split
default / test

Official source

initial import