velocity of escape

Definition of velocity of escape

: a velocity that if attained by a moving body (as a rocket) would enable it to escape from the gravitational field of the earth or a celestial body and move outward in space the ability of a celestial body to retain an atmosphere around it depends on the velocity of escape at its surface— R. H. Baker this critical speed of seven miles a second is known as the earth's velocity of escape— P. A. Moore

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Cite this Entry

“Velocity of escape.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/velocity%20of%20escape. Accessed 20 Oct. 2021.

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