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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. Answered by: Paul Walorski, B.A. Physics, Part-time Physics Instructor.
   Any object with mass has an escape velocity. The escape velocity is  the velocity at which an object must travel in order to escape the  gravitational pull of the massive object. The escape velocity of  the Earth is 11.186 kilometers per second (a little over 25,000  miles per hour).