Why do different planets have different escape speeds?

Answer 1

The relationship between escape velocity and atmosphere is not a direct one. Escape velocity depends upon the local gravity, which is consequential to the planet's mass and distance. The existence of an atmosphere also can depend upon mass, since with too little mass a planet doesn't hold on well to its atmosphere.

Answer 2

Yes, all planets have different gravitation pulls. The gravity on one planet differs from another planet because of the mass of the planet. According to universal gravitation, a planet with a larger mass will have more gravity than that of a smaller planet. For example, Neptune's free-fall acceleration is 11 m/s compared to that of Earth's which is 10 m/s (rounded). Therefore, Neptune has more mass than Earth and a stronger gravitational pull.

Answer 3

Each planet is a different size with unique densities and overall masses. These are the properties that influence the escape velocity. Generally, a more massive planet will have a higher escape velocity, more speed is required to leave the stronger gravitational field that comes with the higher mass. But size and density also have to be considered.

Answer 4

That's because the escape speed depends on the planet's mass and radius.

The factors are :

M = planet mass in kg

r = object distance from planet centre in metres (usually the distance from the planet centre to the surface, the planet's radius).

Then, using the "gravitational constant", we can derive the escape speed.

G = 6.67384 x 10-11 (the gravitational constant)

The escape speed (in m/s) is then the square root of (2GM)/r.

Answer 5

Because of the magnetic pull of the planet of the craft attempting to leave

Answer 6

to completely break away from a planet's gravitaional pull