Roller Coaster train- How heavy?

I'm doing this calculation for my Physics project and I need to find the weight of one coaster train (the train, consisting of a few carts).
The actual roller coaster we're looking at is the Kingda Ka, but it seems impossible to find the weight of the Kingda Ka coaster train, so does anyone know the weight of a typical coaster train? Cuz it seems pretty hard to find too.
Just so you know, I tried rcdb but it didn't have the weight.
Hope someone can help, thx.

internet search I found:

20kg -- obviously wrong

700 pounds -- possible, probably low

Galaxy Orbiter : Individual coaster car weight: approx. 2,200 lbs
..... Total coaster weight: 320 tons

Some are maybe 1,000 pounds, some way several tons

The cars on a typical roller coaster are not self-powered. Instead, a standard full circuit roller coaster is pulled up with a chain or cable along the lift hill to the first peak of the coaster track. The potential energy accumulated by the rise in height is transferred to kinetic energy as the cars race down the first downward slope. Kinetic energy is then converted back into potential energy as the train moves up again to the second peak. This hill is necessarily lower, as some mechanical energy is lost to friction.

Not all roller coasters feature a lift hill, however. The train may be set into motion by a launch mechanism such as a flywheel launch, linear induction motors, linear synchronous motors, hydraulic launch, compressed air launch or drive tire. Such launched roller coasters are capable of reaching higher speeds in a shorter length of track than those featuring a conventional lift hill. Some roller coasters move back and forth along the same section of track; these are known as shuttles and usually run the circuit once with riders moving forwards and then backwards through the same course.

A properly designed roller coaster under good conditions will have enough kinetic, or moving, energy to complete the entire course, at the end of which brakes bring the train to a complete stop and it is pushed into the station. A brake run at the end of the circuit is the most common method of bringing the roller coaster ride to a stop. One notable exception is a powered roller coaster. These rides, instead of being powered by gravity, use one or more motors in the cars to propel the trains along the course.

If a continuous-circuit roller coaster does not have enough kinetic energy to completely travel the course after descending from its highest point (as can happen with high winds or increased friction), the train can valley: that is, roll backwards and forwards along the track, until all kinetic energy has been released. The train will then come to a complete stop in the middle of the track. This, however, works somewhat differently on a launched roller coaster. When a train launcher does not have enough potential energy to launch the train to the top of an incline, the train is said to "roll back." On some modern roller coasters, such as Top Thrill Dragster at Cedar Point in Sandusky, Ohio, this is an occurrence highly sought after by many coaster enthusiasts.

hope that helps