If you just go a new car it might be that the throttle response is allot faster thus making it normal, if not go see a mechanic.
what kind of car is it
Supercharger
A person pressing the gas pedal.
shaking jerking when pressing on gas
press the break and call the car company you bought it from.
Pressing on the gas pedal sends more gas to the combustion chamber for the combustion process which sends more pressure to the engine for your car to pick up speed.
They fall out of the car right as it pulls away and get left at the gas station........
You may be pressing the gas pedal too hard
Could be as simple as needing a tuneup with a new set of spark plugs.
you may have water in you gas and your injectors may be clogged.
Your car is making a funny noise while going downhill accept when pressing the gas because your car has all them teeth and no toothbrush! Also your car is a piece of crap and needs to be replaced with a better one. If I had to bet, I would say you are driving an american made car, more specifically, a Chevy. hahahaha chevy is the worst car company in the world!
your carburetor is stuck open or borkien you might want to take it to a mechanic