gravity!
When you go uphill, gravity helps slow down the car.
gravity. Going uphill is always harder thatn going along the flat.
Because it doesn't have enough power to pull itself. All vehicles slow down uphill if you don't feed them more fuel.
Gravity is trying to push the car down the hill. It takes more power to overcome that push of gravity. Unless you give the car more gas it will slow down.
Only if the bike is coasting uphill.
Gravity. The car is heavy and doesnt want to move, so you must excelerate to make the car go uphill. If a car is going downhill, the is no need to excelerate because gravity is pulling the car downhill.
On a flat surface it would slow down slowly before stopping. Downhill it may speed up. Uphill it may slow down, stop and start rolling backwards.
Because you have gravity pulling you down and most cars arn't built for up hill
"Brakes" make the whole car slow down.
A parachute.
The forces that slow down a racing car are:GravityAir ResistanceFrictionAerodynamic Downforcethat's the 4 forces