Question

define escape velocity and orbital velocity​

Answer 1

Answer:

Escape velocity is the minimum velocity required to overcome the gravitational potential of a massive body and escape to infinity.

Orbital velocity is the velocity with which an object revolves around a massive body.

Answer 2

Escape Velocity

Escape velocity, in cosmology and space exploration, the velocity that is adequate for a body to escape from a gravitational focus of fascination without experiencing any further speeding up. Escape velocity diminishes with height and is equivalent to the square base of 2 (or about 1.414) times the velocity important to keep up around circle at a similar elevation. At the outside of the Earth, if environmental obstruction could be ignored, escape velocity would be about 11.2 km (6.96 miles) every second. The velocity of escape from the less gigantic Moon is about 2.4 km every second at its surface. A planet (or satellite) can't long hold air if the planet's escape velocity is low enough to be close to the normal velocity of the gas atoms making up the environment.

Orbital Velocity​

Orbital velocity, velocity adequate to make a characteristic or counterfeit satellite stay in the circle. The inertia of the moving body will, in general, make it proceed onward in a straight line, while gravitational power will, in general, pull it down. The orbital way, curved or roundabout, in this manner speaks to harmony among gravity and inertia. A gunshot from a peak will toss a shot more remote if its gag velocity is expanded. On the off chance that velocity is made sufficiently high the shot never tumbles to the ground. The outside of the Earth might be thought of as bending ceaselessly from the shot, or satellite, as quick as the last fall toward it. The more monstrous the body at the focal point of fascination, the higher is the orbital velocity for a specific height or separation. Close to the outside of the Earth, if air opposition could be ignored, orbital velocity would be around eight kilometres (five miles) every second. The more remote from the focal point of fascination a satellite is, the flimsier the gravitational power and the less velocity it needs to stay in the circle.