Question

what is escape velocity​

Answer 1

Explanation:

Escape velocity is the speed that an object needs to be traveling to break free of a planet or moon's gravity well and leave it without further propulsion. For example, a spacecraft leaving the surface of Earth needs to be going 7 miles per second, or nearly 25,000 miles per hour to leave without falling back to the surface or falling into orbit.

Answer 2

Answer:

velocity is a vector quantity. it is defined as the ratio of displacement (initial position to final position) and time taken. it's si unit is m per second.