My Nikon D7000 pictures are blurry?

I recently purchased a Nikon D7000 with an AF Nikkor 50mm f/1.8D Autofocus Lens. I know there's a lot about it that I need to learn and I'm having someone teach me soon, but I leave tomorrow for a vacation and I would like to be able to take non-blurry pictures. I have it on the automatic ("A") setting, and everything I take is very blurry.

The "A" setting is for Aperture Priority. See page 6 of your user manual

It seems that before you will be able to assure good sharp images, you will need to learn how to balance ISO, shutter speed and lens aperture.

Link:

http://camerasim.com/apps/camera-simulator/

If I were you, I would spend the next few hours, practicing using the cameras lightmeter to create the best exposures you can.

NO image will be sharp and blur free unless the shutter speed is at 1/500th second or faster and you are holding the camera as shown on page 37 of your user manual

"A" isn't automatic setting… Set it on AUTO or select the SPORT scene mode

Stick every thing of Full Auto… The focus, exposure, white balance and ISO.
You don't have time to learn the advanced things you need to know.

If yo have the 18-55mm kit lens, bring that too. The wide 18mm end will be more useful for trips and vacations.

To avoid blur, set camera to aperture-priority mode, lowest f/number and ISO to 800 or 1600.

If you are leaving tomorrow, you better just put the camera in AUTO and hope for the best. It will do far better than you are doing with no skill base. The fact that you thought Aperture priority was Automatic shows you have a LOT to learn, and you are not going to do that in a few hours.

For instance, the most likely reason your photos are blurry is because in A priority the aperture was / is likely set at a small opening, (large f-stop number), which forces a slow shutter speed which relates to blur if the camera is not tripod mounted and /or no subject movement. If that does not make 100% clear sense to you, you need to put the camera in AUTO or you are going to have ruined vacation photos.

Do your learning and experimenting when you get back on photos that are un-important.