how fast am I going weighing 12 000 pounds going from a 400 foot elevation to a 2600 elevation.

To determine how fast you are going, we need to use the basic principles of physics. The formula we can use here is:

Speed = Distance / Time

First, let's calculate the vertical distance you have traveled. The change in elevation is from 400 feet to 2600 feet, which is an increase of:

Change in elevation = 2600 ft - 400 ft = 2200 ft

Now, we need to convert this vertical distance to a more commonly used unit, such as meters. Since 1 foot is approximately 0.3048 meters, we can calculate:

Change in elevation (in meters) = 2200 ft * 0.3048 m/ft = 670.56 meters

Next, we need to calculate the time it took for you to cover this vertical distance. However, we do not have enough information to determine the time directly. We need additional details like the acceleration or any other rate to calculate time.

Without knowing the time, we can't calculate your speed. If you provide the time it took or other relevant information such as acceleration or additional distances traveled, we can help you determine the speed.