who invented the formula for speed?
399954
SPEED=dy/dt=distance/time.its not exactly something you invent.it was an axiom,a basis of understanding.
775727
Say hola to Bernhard Riemann. The man who paved the way for relativity also developed the symbol for congruence!
844762
There are jthree  formulae cncerning velocity.These are v=u+at , V^2=u^2+2as ,and s=ut +(1/2) at^2 ,where u= initial velocity,v=final velocity ,a=accelaration.,s= distance travelled and t= time.Now how to decide which formula is to be used?in the problem,just see what they want you to find out and note down what is are already given in the problem, if they give you u,a and t and ask you to find out v,apply formula no.1.But if they gdonot give you time but give the distance or displacement and asks you to find v,donot hesitate to apply formula no,2 and so on.if you have any difficulty to understand.please do not hesitate to write to me through yahoo answersand i shall be glad to assist you
1003883
distance = rate times time or\nd = rt\nr = (x+100) mph\nt = (2x+3) hours\n\nd = rt\nd = (x+100)(2x+3)\nUse FOIL\nd = (x)(2x) + (x)(3) + (100)(2x) + (100)(3)\nd = 2x^2 + 3x + 200x + 300\nCombine like terms\nd = 2x^2 + 203x + 300
583926
An odometer for measuring distance is described by Vitruvius around 27 and 23 BC. The actual invention may have been by Archimedes during the First Punic War. Hero of Alexandria describes a similar device in chapter 34 of his Dioptra. The device was also invented in ancient China by Zhang Heng (78 – 139).\n\nThe odometer of Vitruvius was based on chariot wheels of 4 feet (1.2 m) diameter turning 400 times in one Roman mile (about 1400 m). For each revolution a pin on the axle engaged a 400 tooth cogwheel thus turning it one complete revolution per mile. This engaged another gear with holes along the circumference, where pebbles (calculus) were located, that were to drop one by one into a box. The distance travelled would thus be given simply by counting the number of pebbles. Whether this instrument was ever built at the time is disputed. Leonardo da Vinci tried to build it according to the description but failed. In modern times, however, Andre Sleeswyk was able to make a working model using gears similar to the Antikythera mechanism as opposed to the traditional cogwheel.\n\nThe odometer as used in most modern systems, where separate gears control each digit, was invented by William Clayton with help from Orson Pratt. Clayton, a Mormon Pioneer, developed the odometer (dubbed the "roadometer") to keep track of wheel revolutions on the pioneer carts. The odometer had multiple gears, including one which turned every quarter-mile and one which turned every ten miles.
729421
OK what you need to remember about any problem like this is the formula Distance Traveled=Rate of Travel * Length of Time Traveled, (D=R * T).  As long as you have two of those values, you can calculate the third.  You know the distance, and you know the rate or travel.  To calculate the Time, you get it by itself on one side of the equation.  Divide both sides of the equation by R (rate), like this:\n      D = R * T\ndivide both sides by R\n     D / R = (R * T) /R\nthe R's on the right side will divide out and leave you with\n     D / R = T\nNow you plug in the values for D and R\nFor train A\n     D = 1000 (miles)\n     R = 125 (mph)\nso  T= 1000/125 = 8 hours\nYou know the time is expressed in hours, because your units divide out just like numbers do.  Your are taking miles and dividing them by miles per hour, and that leaves you with hours.\nIf you add in the stops the train makes (2 stops, 15 minutes each) you would add 30 minutes, or 0.5 hours to the total time, it takes Train A 8.5 hours to go from Station 1 to Station 2.\n\nDoing the same thing with Train B...\nT = D / R\nT = 1000 / 100  (Train B is travelling the same distance, 1000 miles, and travelling at 100mph.)\nSolve the equation and you get T = 10 hours, and adding in one stop of 15 minutes (or .25 hours), you get 10.25 hours.\n\nSo, Train A gets there first.  Even if Train B doesn't make it's stop until near the very end of the run, Train A gets to the station in 8.5 hours, and even without any stops, at 100 mph, Train B is still 1.75 hours out of the station at that point.\n\nIt's a useful formula to learn and understand, you can apply in many different situations.\n\nGood luck.
266432
This is tricky without a particular formula to derive. The master of this was Richard Feynmann. Try his Six Easy Pieces. His lectures on the motion of the planets and his autobiographies are fun easy reading.\n"Surely You're Joking Mr Feynmann"  is the first.\nThe Physics Lecture series are classic physics books.
866589
The formula expanded a bit is: E (joules or kg*m²/s²) = m (kilograms) multiplied by (299,792,458 m/s)2\n\nE is Energy, m is mass and c is the speed of light in a vacuum.  \n\nCheck out http://en.wikipedia.org/wiki/E%3Dmc%C2%B2\n\nOff the subject, but an important reply to Fresh Prince and those of the same mind:\n\nYou seem pretty mad.  It is unfortunate that "[we] people disgust [you]."  It does not diminish Einstein’s discovery to say God created the highly balanced universe which is made up of this mathematic formula as well as all formulas - discovered and undiscovered.  Einstein was doing wonderful work in unlocking the mysteries of Creation - he was a genius among geniuses\n\nEinstein himself believed in a "god / creator" - not the God of the Bible, but a Creator nonetheless.  He was not closed - he acknowledged that the universe is so finely balanced on finite mathematical principals, there is a higher intelligence governing things that we cannot comprehend.  He spent his life exploring the wonder of what has been created and set before mankind.  Please cast aside your disgust.  No one is taking credit away from Einstein - or you.  \n\nRegarding religion, Einstein said: "The most beautiful and deepest experience a man can have is the sense of the mysterious. It is the underlying principle of religion as well as all serious endeavor in art and science. He who never had this experience seems to me, if not dead, then at least blind. To sense that behind anything that can be experienced there is something that our mind cannot grasp and whose beauty and sublimity reaches us only indirectly and as a feeble reflection, this is religiousness. In this sense I am religious. To me it suffices to wonder at these secrets and to attempt humbly to grasp with my mind a mere image of the lofty structure of all that is there."\n\nWhen asked: "[Do] You accept the historical Jesus?" \n\nHe replied: "Unquestionably! No one can read the Gospels without feeling the actual presence of Jesus. His personality pulsates in every word. No myth is filled with such life."\n\nNo, Einstein did not believe in God as Christians believe.  But he recognized the order of the universe as a signpost to a higher being.  The point is, there is no cause to be "disgusted" by ideas outside your paradigm.  I am not disgusted with you.\n\nTake a hint from Einstein - the consummate scientist who believed in a Creator: "...science without religion is lame, religion without science is blind."  I will not be blind, so please do not be the former.  Take a look from another perspective; you may learn something of value.\n\nRemember, you may be angry with God, deny God, ignore God, and not care to inquire with an open mind, but God loves you anyway.\n\nHave a blessed day, my friend (that is a positive statement, please take it as such).
198231
Energy equals mass times the speed of light sqaured. It is a theory discovered by Einstein known as the theory of relativity in 1905. It says that iff you go faster than the speed of light you can have advantage over time and space is related to time.
8321
The theoretical physics equation E = mc2 states a relationship between energy (E) and mass (m) first formulated by Albert Einstein in his 1905 paper "Ist die Trägheit eines Körpers von seinem Energieinhalt abhängig?" ("Does the Inertia of a Body Depend Upon Its Energy Content?", published in Annalen der Physik on September 27), one of the articles now known as his Annus Mirabilis Papers.
816384
Distance = Speed * Time.\nWe don't know the "distance" variable for either. We need to find the "time" at which the "distance" will be the same. Let distance = d\n\nWe want to find Thomas's time, so let Thomas's time = t.\nAlexis left 3 hours earlier, so her time is t + 3.\n\nThomas speed is 30, Alexis is 20. So lets fill this in.\nThomas:\nD = 30t\nAlexis:\nD = 20(t+3)\n\nThe distance will be the same, so the D in both equations is the same variable. A basic principle is that if a = b and b = c, then a = c.  Therefore, we can combine the equations for the two people as follows:\n30t = 20(t+3)\n30t = 20t + 60\n10t = 60\nt = 6 hrs\n\n\nThe same applies to the second.\nTimothy:\nD = 58t\nSavanah:\nD = 47(t+2)\n\n58t = 47(t+2)\n58t = 47t + 94\n11t = 94\nt = 8 6/11 OR 8.5454545454545\nt = 8 hours, 32 minutes, 43 seconds\n\n\n\nThe last one is slightly different.\nJet 1 Distance = 331t\nJet 2 Distance = 333t\nThe two distances aren't equal this time, but the two distances added up will equal 1,705, SO:\n331t + 333t = 1705\n664t = 1705\nt = 1705/664 = 2 377/664 = 2.56777108\nt = 2 hrs, 34 minutes, 4 seconds
543583
Use the pythagorean theorum.  Train One is the left leg, train 2 is the right leg, and the distance between them is the hypotenuse.  Since they only traveled an hour, their speed is irrelevant.  That triangle gives the formula of (x+10)^2 + x^2 = 71^2\n\nWork it out from there.  X will equal the distance that the second train traveled, and since they traveled for an hour, that is the magnitude of its speed as well.
70438
None, Zero was invented by Indian Mathematician Aryabhata and later Brahmagupta developed its concept
28186
I don't know who "invented" (first derived) it, but\nit falls out from some reasonably straight forward math.\nSee the explanation at:\n\n    http://www.moneychimp.com/features/rule72_why.htm
83134
you really should have given numbers \n\nkinetic energy will be 1/2mv^2\n\nIts linear speed can be determined by distance over time  (d/t)\n\nthe next 3 answers need me to know what data you have in order calculate their values
370281
Don Beebe of Bills fame has a book and seminar on speed and is highly regarded, so search those names on yahoo search, good luck
485426
Euclid.\nGreek geometer who wrote the Elements , the world's most definitive text on geometry. The book synthesized earlier knowledge about geometry, and was used for centuries in western Europe as a geometry textbook. The text began with definitions, postulates ("Euclid's postulates "), and common opinions, then proceeded to obtain results by rigorous geometric proof. Euclid also proved what is generally known as Euclid's second theorem:  the number of primes  is infinite.  The beautiful proof Euclid gave of this theorem is still a gem and is generally acknowledged to be one of the "classic" proofs of all times in terms of its conciseness and clarity. In the Elements , Euclid used the method of exhaustion and reductio ad absurdum. He also discussed the so-called Euclidean algorithm  for finding the greatest common divisor  of two numbers, and is credited with the well-known proof of the Pythagorean theorem. \nNeither the year nor place of his birth have been established, nor the circumstances of his death, although he is known to have lived and worked in Alexandria for much of his life. In addition, no bust which can be verified to be his likeness is known (Tietze 1965, p. 8).