08 nissan maxima had a weak start and then drove real slow like it had no power?

It has the intelligent key...so i had the fob or whatever the thing is called the clicker in my hand and i went to turn the knob..i didnt have a good grip on it and turned it just enough were it started but it started up real slow like it didnt want to come on but it did. So i back out which was down hill so it rolled and i went to push on the gas and it acted like it was in neutral or something but it wasnt and i would push on the gas and it would barley go,,,so i turned the car off and started it again this time getting a good grip on the knob..it started right up and drove fine. So my question is ...could this have happend because maybe not a good connection when i turned the knob or something or is it something that could be wrong with the ignition?: I just got the car..its the newest car ive owned so i dont know a lot about it or how those keys work. thanks