Is it normal that i hate my mother?

I so hate her. We usually fight, but sometimes i see that she cares for me. She doesn't mind spending money on clothes, my fav. food, now i have a personal laptop, but she always wants everything go her way.

Now I've got a pool party coming up and really want to look good, so I'm on a diet and go to the gym. She blames me for not eating. I eat salad, fruit, oat meal and other healthy stuff and of course some cookies... But she force feeds me. She yells, slaps and ect. me just because I ate salad, not smth hot for dinner. She says I'm going to die. If she's so conserned, why does she beat me?

Also, she's got a bad temper. I had an argument with my cousin, my aunt got upset, and again my mother hit me. this hapens not once in a lifetime, but like every other week. Oh and she always calls me names, that should be only written like this: "******....*** ****". She is very bi-polar, but she doesn't have any mental condition.

I'm on honour roll, not very rebellious and my mother very educated. SO what's her problem? Is it normal to hate her?