does the whieght of a car affect how fast it goes?
103008
a heavier car does not always accelerate slower, or go slower. \nA Dodge Neon is a very light car, yet the Dodge Hemi Ram Pickup Truck (very heavy) will accelerate much quicker.\nvehicle weight does not affect acceleration or how fast it can go. These things Are affected by the amount of horsepower and torque that the engine has available to move the vehicle.
235373
I don't know what Todleor's law is, but what you're describing is called the Doppler effect.   As the car approaches you, the horn seems to increase in pitch because you're hearing more waves (cycles) per second than if the car is at a fixed distance and not moving.   After the car has passed, you're hearing fewer waves per second.   Look in any physics text book for more details, or search the web for doppler effect.
296770
i suppose it depends on the car.  there are a few cars that are jet powered that can travel faster than the speed of sound.
170375
if you shot a gun from a car, does the bullet come out any slower??? no, the speed of your travel adds to the speed...
626050
40 mph, according to the guy driving forward next to me. A speedometer won't work in a car going in reverse.  ;>)
572689
No easily measurable effect. There is a small Coriolis effect when flying north or south, but not when flying east or west. The air and Earth are all rotating as a unit, so except for wind, it is no different than driving on the ground. Wind speed and direction is controlled more by heating from the Sun than anything else, and it can blow in any direction. True, prevailing winds to tend to make for quicker travel in one direction, but that is not what you are talking about I think.
711454
Just because a car can go 200 mph doesn't make it one of the better cars on Earth.\n\nIt just means it's fast.
551860
Not sure what you are asking....but exhuast header will vary depending on the engine and type of header.  Typically you may gain up to 8-10 % performance.
306765
Speed is always relative to something else.\n\nSo, relative to the car, the fly is going at quite a low speed as it buzzes around inside.\n\nRelative to the road, the fly is going at just over or just under 70mph, depending on which direction it is flying within the car.\n\nRelative to the sun, the fly is moving at thousands of miles per hour as it rotates once around the sun every year, just like the rest of us.
54242
A change in a objects velocity produces acceleration.\n\nAcceration is a measurement of the rate of change of velocity, and is usually measured in "meters per second squared" or ms^-2.\n\nIf a car is travelling at 5 meters per second, and over a time of 5 seconds, increases its speed to 15 meters per second, it has accelerated at a rate of 10 meters per second over 5 seconds, or 2 ms^-2 (2 meters per second squared)\n\nHope that helps
635726
uh?  faster than your car.
249403
wats the top speed of ur car?????
760675
Making something go fast is not all that difficult much of the time, it is about making it *controllable*. Speed (power) is nothing without control.\n\nIn the air, not only do you have the option of full 360 degree movement options (esp with rotating wing aircraft), you do not have "blind corners", slippery road surfaces and sodding speed cameras.\n\nIn many ways we DO embrace much of the other technology though, from lighter materials, more aerodynamic design and advanced navigational facilties (FRED / GPS) etc\n\nOne thing that has never seemed to make it to the road is an engine with twin spark plugs - a requirement on all conventional engined aircraft. Not only does it give backup (less critical on the road) but ALSO makes a fair difference in economy. When switching magnetos (ignition) from BOTH to Left or Right, a drop of 50-100 RPM is not uncommon - suggesting strongly that the additional spark does indeed improve effieicney and power output.\n\nAeroplane engines are also happy to be leaned out considerably more than automobile engines. Again allowing for greater economy AND power.\n\nAre there any other technologies you are thinking of specifically that you think should be incorporated into cars?
757186
theoretically -- yes\n\nyet fuel consumption is much more affected by other factors like  soft tires (that are inflated less than specified pressure), any present of strong wind or anything that increases the drag -- for example, when I travel long distances with the bicycle mounted on the back of the car, the drag and fuel consumption increases noticeably.
453520
OK here goes\n\nFaster = higher top speed \nQuicker = accelerates faster\n\nFor the street quicker is much more important.\n\nTop speed is not influenced by weight, in fact more weight makes it easier to handle at high speed. All that influences top speed is drag and horsepower.\n\nAcceleration is influenced by the  power to weight ratio, traction, gearing, and a bit by drag.\n\nRsx type-s has a top speed of 124 and 1/4 mile of 15.16/93.24\n\nAccord V6 I was unable to find the info for either but I think it would be both faster and quicker.
43692
The headers will shift the powerband slightly to the right. If your driving features more low RPM operation, you will have improved mpg, if you drive in the high RPM range, you will have worse mpg.
101052
changing the final drive ratio won't hurt the car, if that is what you are asking. What you didn't specify ws, what engine/trans. you have, and the gear ratio now.\nGoing to a 3:73 from say a 2:91, or even a 3:08, 3:42 whatever will do 2 things. This will make your engine rpm rise quicker, and will result in a higher rpm at cruise speed while on the freeway. Will also decrease gas milage.\nIf you are looking for the quick take off at a light, gears will do it, but won't make your car any faster. Only top out sooner.\n\nEDIT: it does not take less work for a motor to turn the diff. with lower gears (yes lower. Higher numbers are lower) In fact, the motor is doing the same work, only faster. A set of higher numbered gears cause the engine to rev up quicker, that is it. Still uses the same power. The reason people go with a new gear is to increase performance off the line, by making the engine reach it's power band quicker. An engine does not develop peak power at ide or low rpm's.