when you go up and down inclines
Gravity.
It keeps it on the ground
Gravity affects the fabric of space-time. So both space and time will be distorted.
It changes the air resistance of the car - which is the controlling factor of top-speed.
no gravity pulls you at a steady speed. however air presure and movement WILL affect your speed of travel.
Arrow dynamics
Gravity.
YES
yes This is because of the fact that gravity is a measure of acceleration. The longer the car has to accelerate the faster is will be by the end.
It keeps it on the ground
The placement wouldn't affect the speed, but would affect the handling.
It would affect its speed because the weight of the car is gonna slow it down
Gravity, the heavier the object the more force gravity has on it, and the faster it can accell before the force of friction (from the wheels, road surface and air) equal the force of gravity till it hits is maximum speed.
Gravity makes higher and lower water flow which makes it deaper or shallower.
Because the effect of gravity is to cause forces between every two objects that have mass, and force on an object generally affects its speed.
no
Weight