What is the max speed a car can have as it passes the highest point of a bump before losing contact w/ road?
926820
The condition for max v is\n\ng = v^2/r\n\nSo vmax = sqrt(gr) = sqrt(42.1*9.81) = 20.4 m/s.\n\nThat's the speed at which accelaration due to gravity is just enough for the wheels to stay in contact with the road (and the reaction force from the road is zero).\nTo see why, read my answer to your earlier related question.
985855
velocity = df(t)/dt = 4π + 4πcos(4πt)\nacceleration = dv(t)/dt = -16π^2sin(4πt)\n\nParticle is at rest when velocity = 0, or 4π+4πcos(4πt) = 0\n1+cos(4πt) = 0\ncos(4πt) = -1   The values for which cosø = -1 are ø=n(odd)π, so when\n4πt=n(odd)*π, t = 1/4*n(odd); thus for t = 1/4, 3/4, 5/4, 7/4, 9/4, 11/4 the velocity is zero\n\nThe maximum velocity occurs when cosø = 1, so the max velocity is 8π
698763
Vy=sin(36)(30)=17.63m/s\nVx=cos(36)30= 24.27m/s\n\nwhen it reaches the ground, the speed will be the same as Vy\nVf=at+Vi\n-17.63m/s=(-9.8m/s^2)t+17.63\n-35.26m/s=(-9.8m/s^2)t\nt= 3.597 s\n\nwhen it reaches the highest point, its velocity will be 0m/s\nVf^2=2ad+Vi^2\n(0m/s)^2=2(-9.8m/s^2)d+(17.63m/s)2\n-310.81m^2/s^2=(-19.6m/s^2)d\nd= 15.85m\n\nx=vt\nx=(24.27m/s)(3.597s)\nx=87.29m
926411
The stop distance is not an arithmetic progression (ie it is not 40m). It is in fact a geometric progression. The stop distance is a lot lot more. Truthfully, I don't know but if you were travelling at 120 kmh and there was a truck 40m (or even 60m) in front of you when the brakes locked; you'd be dead.
367655
without being modified I would say the Ducati it goes way past 200 mph, very quickly
48256
May not exactly answer your question but its close.\n\nFastest Land Car Speed\nThe one-mile (1.609-km) land speed record is 1,227.985 km/h (763.055 mph), set by Andy Green in Thrust SSC in the Black Rock Desert, Nevada, USA, on October 15, 1997. Thrust SSC (Super Sonic Car) completed its record-breaking run in a matter of seconds, but was the culmination of six years of work and a six-week on-site campaign. Two and a half years of research went into the shape of the Thrust SSC, and building the most powerful car ever took a further two years and 100,000 man-hours.\n\nhttp://www.guinnessworldrecords.com/content_pages/record.asp?recordid=43540
487670
None. It takes no power to maintain that speed (on level ground, no friction). The object has kinetic energy (0.5 * m * v^2). Power was required to put it in motion and power can be recovered by decelerating it. If you do the math, the energy is 3551.86 ft-lb, equivalent to 1 horsepower for 6.458 seconds. Answer 1 neglected the fact that weight must be converted to mass by dividing by g, and energy is proportional to v^2.
626050
40 mph, according to the guy driving forward next to me. A speedometer won't work in a car going in reverse.  ;>)
423520
This is a no-brainer. While both are meant to withstand collision one will withstand even a very slight bump and other won't.  By this I mean, if I back into something with my '78 Town Car the chrome over steel bumper won't be marked, but if I back into the same thing with my '01 Sebring the bumper paint will scratch, possibly chip and the fibreglass facia itself might crack.  So much for the bumper that'll withstand a five mile per hour hit.  And, the fellow who thinks that every bumper is steel, but has a plastic facia should look at one of them.  He might be surprised to see honey-combed plastic where he thinks the steel would be.
439730
107.23 mph.  Do I get 10 pts?
158872
The shape of the car is not the only factor in how fast it goes. However it is one of the most important factors in driving fast and doing it with some relative safety. The word you are looking for is aerodynamics. Aerodynamics is how well air moves over and around the car. Aerodynamics also holds the car to the ground creating what is called down force. Cars can be shaped to give more or less down force to any givin side of a car. The Saleen S7 is said to be able to be drive upside down at 160 mph and still have all 4 wheels on the ceiling.
811177
The fastest land speed record car is the British-designed Thrust SSC, the first car to break the sound barrier with a speed of 1227kph (around 761mph), or Mach 1.01.\n\nThe fastest production car in the world is the 1001bhp 16-cylinder Bugatti Veyron 16.4: 0-100kph in 2.5 seconds, top speed limited electronically at 407kph to prevent tire damage, the fastest accelerating production car at 100kph, 160kph(100mph), 200kph, 300kph and 320kph(200mph). Top Gear presenter Jeremy Clarkson said that if a Veyron and a McLaren F1, the previous fastest car, were put on the line together, if the F1 would be going at 120mph when the Bugatti is at a standstill, it won't get to 200mph before the Veyron.\nIt's a truly amazing car.
1032126
Yes, the helicopter will hover and will not travel to the rear of the car. If, and only if, your speed stays constant. In this case the car's speed  is 80mph. Any acceleration, even by 1mph, will cause your helicopter to travel rearward.  That's because speed is all relative. In this case the car, and everything inside of it, including the air, is traveling at 80mph.  The ground or road is at a stand still, compared to, or relative to the car which is moving.\nTry this simple demonstration. While traveling at a constant speed, 30mph, 50mph, or whatever, as long as your speed stays the same. Using two cups, raise one cup, which is filled with water, about a foot or two above the other cup. Pour the water into the the lowered empty cup. If you're good, you shouldn't spill a drop.  Now try it again, but this time as you are pouring the water, ask your driver to accelerate. You're going to get wet!\nIt's all about physics. Once an object is in motion, it wants to stay in motion. It takes an outside force to change that motion. In the case of your helicopter hovering in a car going 80mph, all matter inside your car wants to stay at 80mph, so accelerating or decelerating, by stepping on the gas pedal, or hitting the brakes is the outside force which will change that motion.\nHope I was helpful in answering your question?
740143
it may be that the speed is so fast that it may have reached the maximum speed.... this could be the maximum limit..\nit's critical by common sense...\ncheck the dictionary, or thesaurus....
778457
75mph! or as fast as you want long as you don't get caught!
1009659
No, no, never!  Speed bumps cause damage to vehicles.  There are other traffic calming devices available that work as well and don't damage vehicles.  And excessive stop signs are not the answer to speeding traffic either.
1118371
double_nubbins has the right approach.  I will add a couple of hints: how long will it take the car to fall 19ft (remember the acceleration equation s=.5*g*t^2).  Assuming there is no air drag, the horizontal velocity of the car must be enough to cover the 52m width in that time.\n\nSpeed of the car? The horizontal speed? The falling speed?  The speed in the direction of motion?\n\nHorizontal speed: as calculated above\nFalling speed = g*t, where t is the time calculated above.\nSpeed  in the direction of motion = sqrt(horiz speed ^2 = falling speed ^2)