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The downshift causes the engine to turn at a slower rate. This causes the wheels of the car and the engine to be more similar and gives more of an emphasis on producing power versus a top speed which is achieved in a higher gear.
Alternate answer:
An internal combustion engine only develops power when it is turning between a narrow band of revs. usually between 3000 and 6000 rpm on the average car.
The hill puts a heavy load on the engine and causes it to slow down. Shifting to a lower gear (actually a higher gear ratio), allows the engine to speed up and develop more power to cope with the hill.
What else can I help you with?
In a tractor trailer loaded going up hill do i shift up or down Same if I'm going down hill?
If you are driving a loaded tractor trailer, you would downshift to gain more power when going up hill and downshift to control speed when going down hill.
Why does JEEP shift up at high RPM and shifts down as soon as accelerator is released?
Because if you have the crusie control on and you are going up a steep hill it will do anything it can to keep that speed.
Should you remain in drive when going up a hill or should you shift down a gear?
It depends on how steep the hill is and how heavy your vehicle is. If you find that when going up the hill in second gear you are getting too many RPM's, then yes shift up to third. But generally you should keep in the lowest gear possible, without overrevving the engine, especially if you're driving a loaded van or other heavy car.
Is it better to go up hills or down them when exercising?
Up hill. It builds energy, and strenth. Going down hill doesnt do much
What is the hold button for on your shift lever of your automatic 1992 Mazda protege lx?
Its a old button for a certain gear. Say you are in overdrive but going up a hill and you need to down shift, hit that button and the car will automatically downshift until you release that button. The same thing applys as when going down a hill, you will want to keep the car at a lower gear so not as to use the brakes as much. It will slow you down automatically.
What are some real world examples of negative slope?
a skier going up a hill a skier going down a hill
What does it mean for a line to have a negative slope?
If a line has a negative slope it is going 'down hill' and if it has a positive slope it is going 'up hill'
What causes a bicycle to speed up going down hill?
gravityGRAVITY
If you ride your bike up a hill then ride down the other side what is your acceleration like?
Going up a hill would make your acceleration decrease or cause it to be slow. Going down a hill would make acceleration increase causing you to go faster.
When a skier goes up a hill and down a hill what energy is that?
The skier going up the hill gains potential energy due to its height increase, which is stored energy that can be released when the skier goes back down the hill. As the skier goes down the hill, the potential energy is converted into kinetic energy, which is the energy of motion.
Can you manually shift an automatic transmission?
To a point. You can shift it into L and it wont try and shift. Then go to 2 and it will shift there and stay. Then go to D and it will go manually. On down shifting the newer ones will not allow you to go back down unless the transmission is below a certain speed. But you can still get some back pressure if you go from D to 2 or 2 to L. It does assist you in stopping if that is needed. Usually this is helpful if you are pulling a load and going up or down a hill. By keeping it in a gear you select the car wont have to work so hard going back and forth between gears. Also not work the brake so hard on the down hill side.
Car drivers need accelerate constantly while going up hill whereas they use the brakes more when going down hill?
Yes that's right
