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  1. In celestial mechanics, escape velocity or escape speed is the minimum speed needed for an object to escape from contact with or orbit of a primary body, assuming: Ballistic trajectory - no other forces are acting on the object, including propulsion and friction

  2. Dec 30, 2023 · Learn what escape velocity is, how to calculate it, and why it matters for space travel and astrophysics. Find the escape velocity values for various celestial bodies in a table.

  3. Escape velocity is the velocity needed for a body to escape from a gravitational centre of attraction without undergoing any further acceleration. Learn how to calculate escape velocity, compare it with orbital velocity, and explore its applications to Earth, Moon, and black holes.

    • The Editors of Encyclopaedia Britannica
  4. Jul 28, 2023 · Learn what escape velocity is and how to calculate it for different planets and the sun. Find out the minimum speed required to escape Earth's gravity and see a problem with solution.

  5. Learn how to calculate the escape velocity of an object from a gravitational field, and the difference between escape velocity and orbital velocity. See worked examples, exam tips and download PDF notes.

  6. Dec 5, 2022 · Escape velocity is defined as the minimum velocity required for an object to escape the gravitational force of a large object. The sum of an object's kinetic energy and its gravitational potential energy is equal to zero.

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