## What is Escape Velocity?

Escape velocity is the minimum speed needed for a free, non-propelled object to escape from the gravitational influence of a primary body, thus reaching an infinite distance from it. It is typically stated as an ideal speed, ignoring atmospheric friction.

### How to Calculatr Escape Velocity?

The escape velocity from a body is calculated using the following formula:

where:

- v_e is the escape velocity in meters per second
- G is the gravitational constant (6.674 × 10^-11 N m^2 kg^-2)
- M is the mass of the body in kilograms
- r is the distance from the center of the body in meters

### Example

the escape velocity from the surface of the Earth is about 11.2 kilometers per second. This means that an object launched from the surface of the Earth with a speed of at least 11.2 kilometers per second would escape the Earth’s gravity and continue traveling into space.

The escape velocity from a body decreases with distance from the center of the body. This is because the gravitational force decreases with distance. For example, the escape velocity from the surface of the Moon is about 2.4 kilometers per second, which is much less than the escape velocity from the surface of the Earth.

Escape velocity is an important concept in space travel. In order to reach another planet, a spacecraft must travel at least the escape velocity of the planet it is leaving. For example, in order to reach Mars, a spacecraft must travel at least the escape velocity of Earth. Once the spacecraft reaches Mars, it must then slow down enough to enter orbit or land on the surface.

Escape velocity is also important in the study of black holes. Black holes have such strong gravity that nothing, not even light, can escape. The escape velocity of a black hole is called the Schwarzschild radius. The Schwarzschild radius is a measure of the size of the black hole. The larger the black hole, the larger the Schwarzschild radius and the greater the escape velocity.

## Escape Velocity Calculator

` ````
```v = sqrt(2GM / r)
where:
v is the escape velocity (in m/s)
G is the gravitational constant (6.674 x 10^-11 N(m/kg)^2)
M is the mass of the body to escape from (in kg)
r is the distance from the center of the body (in m)

## Escape Velocity Calculator

An Escape Velocity Calculator is a simple tool that figures out how fast something needs to go to break free from a planet’s or star’s gravity. It uses a special formula to do this.

Here’s how to use this tool:

**Enter the body mass**: You either pick from a list or type in how heavy the planet or star is. Some calculators even let you put in the size of the planet or star if it’s not in the list.**Type in the Distance (if needed)**: Some calculators ask how far away you are from the planet or star. Others just guess that you’re starting on the surface.**Click ‘Calculate’**: After you put in the information, you click ‘Calculate’. The calculator then tells you the speed you need to escape the planet’s or star’s gravity.**Understand the Answer**: The calculator gives you a speed, usually in meters per second (m/s) or kilometers per second (km/s). This is the speed you need to reach to get away from the planet or star without any extra push.

This Escape Velocity Calculator is perfect for students learning about physics or astronomy, or anyone who loves learning about space. It’s a shortcut for figuring out escape speeds and helps you understand how a planet’s or star’s size and weight, and your distance from it, affect the speed you need to escape its gravity.