Tech Next Year...Plans?

I am going to Virginia Tech Polytechnic Institute and State University next year and I am very excited. And although I am going as a Physics major my future is still quite unsure to me. I took AP Physics this year and I thought I would do well at the start, but I soon found that this was not the truth. My failure in AP Physics made me question my 10 year long plan to major in the subject. I am also planning on double majoring, completing a geology degree as well. This I am not worried about because rocks don't come with formulas to explain them. But I must say I am nervous about the future...but mainly excited! Go Tech!