When I place a minecart on a track and have powered rails activated by detector rails, the minecart goes over the detector rail and the powered rail activates, but the cart stops on the powered rail.

What I expected to happen was...:
Usually the cart passes the detector, and onto the powered rail which stays powered for a few more seconds, enough time for the cart to pass by.

What actually happened was...:
The cart stops on the powered rail and can be moved by pushing it, but moves very slow.

Steps to Reproduce:
1. Place a regular track, like 7 or 8 out
2. Then place a detector rail
3. Then place a powered rail (1 or 2)
4. Send the minecart down the regular track and watch the minecart stop.

The images attatched show the stopped minecart and the set up. The command blocks that are there just run the /playsound command.