accidentally kicked the usb while it was plugged in and now its saying that there was a malfunction. how can i get my documents off the SanDisk USB?

I've never had this difficulty with A SanDisk flash drive, in spite of my rough treatment of same. With other drives, though, I can sometimes access the data by just nudging the drive very gently. Apparently, even small variations in the metal part of the drive (that plugs into the computer) can seriously affect the drive's ability to be read from or written to. I plug my problem drives in, and nudge them to one side or put a little pressure on them (up or down). Many times, this is sufficient to make the drive accessible. When I have problems with a flash drive, my thinking is "Time for a new drive". So, while the drive is accessed, I copy everything of importance into my computer and/or to another flash drive. Then, I delete everything from the bad drive and toss it in the trash. I also recommend these three words --- Backup Backup Backup. Other than that, you might want to visit the Geek Squad.