It looks like you just broke an UV filter. The metal rim may have warped a bit and this is why your lens cap is stuck. You can try to pry it out but you can also replace it.
But you may want to inspect the rest of the lens. The (real) front lens may have scratches caused by the glass shards from the filter (*), and the filter thread may be damaged. You can also check the lens for focus or alignment issues. Tape a newspaper image to a flat surface and take a shot (tripod or very high speed, with the optical stabilizer disabled) trying to be as perpendicular as possible to the surface. Then pixel-peep the result, looking for dissymetries in the focus. Then do the same at low speed with the stabilizer activated.
If the results aren't good, repeat with another lens, to see if the problem is in with the lens or with the mount in the camera body that became misaligned.
You can also get a rough idea of alignment problems with a spirit level:
The bottom of the camera is flat and parallel to the lens axis. I'm using a L-bracket with the other branch flat on the kitchen counter (which is horizontal, according to the spirit level). So the rim of the lens should be horizontal too, which can be checked with the spirit level is two perpendicular directions.
You can also check the parallelism of the two sides of the lens in a similar way.
(*) This is an unfortunate example of why having an UV filter permanently on the lens can do more harm than good.