__Motion Formulae__

__Force__

For simplicity we will say that the forces acting on the rocket are thrust and gravity. Therefore,
**F**_{net}=ma=Ru-mg

where R is the rate of fuel consumption, u is the velocity of the gasses with respect to the rocket, m is the mass of the rocket, and g is the gravitational acceleration of the earth.

__Acceleration__

**a=F**_{net}/m

__Velocity__

This equation was derived for velocity in space. We will assume that the velocity on earth is close to this.
**v**_{f}=-uln(m_{f}/m_{i}) + v_{0}

__Momentum__

Momentum is mostly used for collisions so if you want to know what would happen if a rocket hit you while it was moving...
**p=mv**

__Escape Velocity__

The escape velocity is the velocity that a ballistic projectile needs in order to break away from the Earth's gravitational pull. Its value is
**v**_{esc}=40320 km/h