Speed has a direct affect on the magnitude of forces experienced by the vehicle. Force is mass x acceleration( or deceleration). This is why brakes/tires on performance cars are so much larger having to manage a great amount of energy during braking/cornering.
Drag( the force of air on an object) is affected by speed, it goes up 4 times( quadruples) as speed doubles . It would take 4 times the current horsepower to double the vehicles top speed. This is why manufacturers/race teams spend millions of dollars in wind tunnel research/development. Drag even at highway speed a noticeable affect on fuel economy.
It affects it by killing people.
If It's a head wind it slows down the vehicle's acceleration, lowers the vehicles top speed. If its a tail wind it could raise a vehicles top speed, that is why records have to be run in both directions to negate the wind's influence.
It's air resistance it takes power to overcome & help keeps them down on high speed models.
What part of an automobile's engine has a direct impact on the acceleration rate of the vehicle as well as what do I do to improve that vehicles acceleration rate.
Speedometer
None can.
The wheel size does affect its speed.
Add a governor to limit the speed of the engine or vehicle.
It is the same as posted passenger vehicles. Trucks/Cars with trailers have a posted speed lower than passenger vehicles so if the motorhome is hauling a tow car then they should follow the posted speed limit for vehicles with trailers.
It will slow the vehicles acceleration down, and make it take longer to stop. If the height of tire changes it will also affect the performance/ride quality.
It has no direct affect on the speed of an object. It does affect the energy content of the speeding object.
It has no direct affect on the speed of an object. It does affect the energy content of the speeding object.