escape velocity
Escape Velocity:.if you throw an object straight up, it will rise until the the negative acceleration of gravity stops it, then returns it to Earth.
Gravity's force diminishes as distance from the center of the Earth increases, however. So if you can throw the object with enough initial upward velocity so that
gravity's decreasing force can never quite slow it to a complete stop, its decreasing velocity can always be just high enough to overcome gravity's pull. The initial velocity needed to achieve that condition is called
escape velocity. .From the surface of the Earth, escape velocity (ignoring air friction) is about 7 miles per second, or 25,000 miles per hour. Given that initial speed, an object needs no additional force applied to completely escape Earth's gravity
Escape Velocity
by London Poison on Apr 15, 2010 04:49:39
Escape Velocity in science is a theory about gravity and picking up enough speed to escape
the Earth's atmosphere.
In philosophy it's
that moment in your life when enough things are going right that you can finally
break free from your chains.
Example:
"Today, I
let go of all my
past pain-- I've
finally reached Escape Velocity."