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I have little problem understanding about how car rolling resistance , wind resistance and angular resistance affect car speed.

SPEED is km/h but resistance is in NEWTONS , i dont understand how that force affects car speed , like FORCE (N) converted to speed(km/h or mph)

How to find car real speed while before resistances it was 100 and after it will be slowed by resistance forces.

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About rolling resistance i know how to find it (i will get xxx NEWTONS ) but how it affects car speed?

I know that rolling resistance means that car wheel torque must be bigger than 100N to make car roll , but does that rolling resistance

also affect car final speed also? slows it down a little bit???

If speed without rolling resistance is 100 km/h or mph then does rolling resistance affect that speed ?

If yes how to find what will be car speed after i add to speed 100km/h or mph that rolling resistance.

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AIR RESISTANCE - i know how to find it , but how thes NEWTONS affects speed????

I got again lets say random number 200N is air resistance at speed 100km/h or mph

then how i find car real speed after thaT? That force must slow car down a little bit.

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ANGULAR (grade) resistance , basically its the resistance when car goes uphill and it will slow down by hill angle.

I know how to find that force , but again how it affects speed?

Lets say i have >>>>

weight 1400kg

and hill angle 5deg

it means 1400 * sin(5deg)=122kg

i just take this 122kg and add to car weight while i find out rolling resistance?

because car weight is bigger then rolling resistance become also bigger??

So it means rolling resistance still affects car final speed???????

*Sorry if the question looks dumb for you but i really need to understand logic behind this , its small part of big project what i have to do at school . Internet is full of info how to find out these forces but how i use it to reduce real speed is not explained :(*

I would be thankful for little help .