Question

write short note on:
escape velocity​

Answer 1

Explanation:

escape velocity is the minimum speed needed for a free, non-propelled object to escape from the gravitational influence of a massive body, thus reaching an infinite distance from it. Escape velocity rises with the body's mass (body to be escaped from) and falls with the escaping object's distance from its center. The escape velocity thus depends on how far the object has already traveled, and its calculation at a given distance takes into account the fact that without new acceleration it will slow down as it travels—due to the massive body's gravity—but it will never quite slow to a stop.

Answer 2

*In physics (specifically, celestial mechanics), escape velocity is the minimum speed needed for a free, non-propelled object to escape from the gravitational influence of a massive body, thus reaching an infinite distance from it. Escape velocity rises with the body's mass (body to be escaped from) and falls with the escaping object's distance from its center. The escape velocity thus depends on how far the object has already traveled, and its calculation at a given distance takes into account the fact that without new acceleration it will slow down as it travels—due to the massive body's gravity—but it will never quite slow to a stop*