the escape velocity of a rocket depends on the?

Answer 1

...mass of the planet it is "escaping" from, and the mass of the rocket.

If there are other large objects close enough to exert a gravitational influence on the rocket, these may need to be factored in as well.

Answer 2

Mass of the body whose gravity well it is trying to escape from. Escape velocity from the moon is a lot less than from earth. I am not a rocket scientist, so I cannot give you an equation, and I always get kicked out when I go into those doors with the special signs on them down at the Cape (Kennedy). I seem to remember the words only and personnel and like authorized or something. :P

Answer 3

It depends soley on the mass and radius of the body from which you're escaping.

The escape velocity is what's required to supply the energy needed to travel to "infinity".  This energy is equal to GM/r, where G is the gravitational constant, M is the mass of the body and r is the distance from the center at which you're measuring the escape velocity (assuming the mass M is spherical).  Since E/m = 1/2 v^2, the escape velocity (in Newtonian physics) is equal to sqrt(2GM/r).

Answer 4

Just the mass and radius of the planet you're escaping from. Ve=sqrt(2GM/r)

sqrt()=square root of

Ve is the speed needed for a projectile (with no acting forces other then gravity) to go from ground level and come to a stop at a distance of infinity away. In other words if you shot a cannonball off the earth with a speed of 25,000 mph it would slow down asymptotically reaching a speed of 0 at a distance of infinity away. Any extra tap away from earth would make it continue indefinitley, any tap towards earth and it would eventually fall back to the ground. Rockets do not need to go this fast because they have a continuous power source to oppose the pull of gravity. It could escape from earths gravity at a speed of 1 mph, it would just take a long time.

Answer 5

Escape velocity is the speed that an object needs to be traveling to break free of a planet or moon's gravity well and enter orbit. 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 enter orbit.

Answer 6

The gravitational pull of the planet. The heavier/denser the planet/moon, the greater the gravitational field, which increases the escape velociity.

Answer 7

Only on the mass and radius of the planet -and of course Newton's gravitational constant.

Answer 8

Payload

Answer 9

Thrust

Answer 10

Gravitational attraction of the primary.