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Mechanics · gravitation

Escape Speed

Gives the minimum ideal launch speed to escape a spherical mass from radius r.

v = √(2Gm / r)

Copy formats

Variables

v
escape speedm/s
G
gravitational constantN·m²/kg²
m
central masskg
r
distance from centerm

Conditions / notes

Neglects drag, rotation, and later propulsion.

Reference details

Subject
Mechanics
Topic
gravitation
Plain text
v = sqrt(2 G m / r)

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