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ARC-Easy / Mercury_7247083 / When manned space exploration began, NASA used the gravity assist concept so…

Problem

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question

When manned space exploration began, NASA used the gravity assist concept so that spacecraft could conserve fuel. Which statement explains why the gravity assist concept was useful for spacecraft to successfully travel and return to Earth?

choices

  • It gave spacecraft a timed trajectory.
  • It ensured spacecraft would return home safely.
  • It was helpful in planning spacecraft trajectories.
  • It ensured spacecraft would avoid being pulled into the sun.

Discussion

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Source and history

upstream_id / Original problem ID
Mercury_7247083
task_id
f0537b23-3877-5726-8655-6eae231066c9
task_key
ARC~2dEasy--test--Mercury~5f7247083
task_revision_id
1
config / split
ARC-Easy / test

Official source

initial import