how much force does an object create that weighs 20000 lbs. and traveling at 1000 ft/min?

Answer 1

It depends.

It has a force pushing down that is 20000 pounds.
If it is going around the globe, for example, it also has
a momentum (mass times velocity). But force is given by,
F = dp/dt (change in momentum over change in time).
In this case neither momentum changes or the delta t
(no acceleration) so it has no force horizontally (in the
direction of motion).

Once it hits something, however, it quickly decelerates
and there is indeed a force (this force is called impact).

Answer 2

You wouldn't be talking force with the data you've given as the force would only materialise if there was a deceleration or and acceleration.

You would be using momentum (=mass*velocity) or kinetic energy (=0.5*mass*velocity^2).

Answer 3

20000000 ft lbs/min