Best for you is to use a gear that'll allow you to turn the cranks at 80-100 turns/minute. Best for the bike (if you have external gears) is to keep the chain running as straight as possible.( Don't run it in big-big or small/small)
You need to shift gears on a bike when going up a hill because if you have a gear too high, it will become harder and you will eventually become tired. On a lower gear will help you because it will be easier.
Yes.
From the human standpoint you want to use the gears in a way that lets you turn the crank at about 80-100 turns/minute.
If the going gets so heavy that you can't keep that pace, go down a gear.
If the going gets so easy that you go above that pace, go up a gear.
From the bike's standpoint it depends on what gear levers you've got and what your drive train looks like.
If you have 3 gears in front and more at the back you should try avoiding cross-chaining - that is, running the chain on the big sprocket in the front AND the big sprocket at the rear. Small-small is equally bad.
If you have 2 at the front cross-chaining becomes less of an issue, but not entirely unimportant.
When it comes down to the actual handling it's up to what brand of shifters you've got. For 3x6 it might even be friction shifters(small levers stuck either on the frame on the bar)twist them one way to get the chain to a bigger sprocket and the other to get it to drop to a smaller one.
It can also be integrated shifter and brake combos. you flick a lever behind the brake lever to get it to change gears. There might either be a smallish knob to drop a gear, or you do that by flicking the switch the other way.
Gears will go in easier if you don't push that hard on the pedals while shifting.
If you have an internally geared hub you will need to stop pedalling entirely for a moment to allow the new gear to go in.
Because humans, like engines, have a span where they work best.
Gears lets you trade power for speed , or the other way around. This means you can keep pushing the pedals with the same, comfortable amount of effort and still get strength enough to climb the hill.
No the can go faster downhill or uphill
noo
It depends... the object could be falling, going straight, going uphill or going downhill.
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.
Only while going uphill or while on pavement other than that, you should keep it pretty loss especially while going downhill
because if you going down hill its faster because its a mountain
I would suppose it would matter if you were going uphill or downhill.
Your car should adjust to the proper gear it needs when travelling uphill. Usually you need to turn the overdrive off or shift to a lower drive gear when going downhill or towing. That will use the engine to slow the car instead of your brakes. That way they don't overheat to the point of not working.
Gravity adds a force (kgs) going downhill = sin (incline angle) * mass vehicle (kgs) and detracts the force when going uphill (same equation)
11mpg loaded. 11.25mpg unloaded. 11.5mpg going downhill. 10.75mpg going uphill. 10.5mpg going uphill loaded. Subtract 1mpg if it's raining. Add 1mpg if you drive less than 65.
Average speed = Distance travelled/Time taken. And that applies whether the object is going downhill, uphill or is on a roller coaster.
Exactly what it sounds like. Cars have different gears to chose from depending on how you want to drive. Low gears are strong but slow, good for getting started, going uphill, or just going slow. High gears are fast but weaker, good for going faster.