It loses power because going uphill is harder then going downhill therefore causing it to use more gas and then making it lose power bit by bit.
A power loss can be from a dead or almost-dead battery. If the car loses power on a hill, it might be a fuel injector or fuel pump, if I'm not mistaken.
Gravity if you are coasting.
If a car shakes and loses power when idling it can be the spark plug. If a spark plug is fouling, it can cause power losses.
Gravity pulls it down and the weight of a car is less dense than a hill and therefore it goes down
When a car goes over a hill, the physics principles involved include potential energy, kinetic energy, and centripetal force. As the car goes up the hill, potential energy increases due to its height. At the top of the hill, this potential energy is converted into kinetic energy as the car accelerates downward. Centripetal force keeps the car moving in a curved path as it goes over the hill.
Try changing the fuel filter.
gravity
Same as any car with power steering. You can continue to steer the car but with increased effort.
what year is your car and engine cylinders
There could be many reasons why a car will lack power when going up a hill. The car could need a tune up or the transmission maybe having problems.
Have vehicle scanned to determine the problem
As the car rolls down the hill, its potential energy decreases as it loses height due to gravity pulling it downwards. This potential energy is converted into kinetic energy, resulting in an increase in the car's speed as its kinetic energy increases. At the bottom of the hill, most of the potential energy is converted into kinetic energy when the car is moving at its maximum speed.