It adds increased drag to the motor and transmission due to pulling against gravity. It is normal
The car is losing kinetic energy as it climbs the hill. This kinetic energy is being transferred into potential energy due to the increasing height gained during the climb.
No. The car is applying a force to keep going up the hill and the hill and car are providing forces to keep it up.
Don't back up a hill, drive up it.
No, a car driving up a hill is not considered projectile motion. Projectile motion involves an object being projected into the air and moving in a curved path under the influence of gravity, while the car driving up a hill is following a linear path on the hill's surface.
Impulse
you drive the car up the hill.
The Honda slows down when going up a hill because a mighty force called gravity is pulling it down. Gravity pulls everything down, so the car needs lots of force to struggle against the strong pull. That time you need to step on the gas pad more harder, and this is what happens if you take a bus up a very steep hill.
Speeds up, slows down or goes round corners.
When driving a car with an automatic transmission up a steep hill it is not necessary to shift gears. The car will do that on its own when necessary.
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.
Magnetism from the iron ore beneath it
Gravity.