If we were given a position function, s(t), which gave the position of an object at time t, then the average velocity between time t sub 1 and t sub 2 is given by the formula: The average velocity formula: average velocity = (change in position) / (change in time) However, any distance unit per any time unit can be used when necessary, such as miles per hour (mph) or kilometer per hour (kmph). In other words, it is the rate at which an object changes its position from one place to another. The average velocity of an object is its total disarticulation divided by the entire time taken. ![]() velocity and the most probable velocity can be established as follows:Ĭ mpv/C r.m.s. Maxwell showed that the most probable velocity is given by the expression.Ī value of the most probable velocity may be calculated from the values of R, T, and M. Most probable velocity is the velocity possessed by the largest number of molecules in a gas. velocity may be seen that values are not the same,Īverage velocity: C = √(8/3π) x r.m.s. If we compare the average velocity with r.m.s. The distribution equation may be used 10 obtain the average velocity, c, of the molecules. Velocity and Most Probable Velocity relationship – The first typical velocity is easiest to estimate and term as the most probable velocity.Īverage Velocity, r.m.s. Root mean square (RMS) velocity is the (square root of the) average value of the square of its velocity. This velocity is disarticulation divided by a time period of the disarticulation. Finally, replace in the formula to get 10 / 1 = 10 km/h (kilometers per hour) on average in total.Average velocity is defined as disarticulation (i.e., change in position) per unit time. Also add up the distance: 5 + 5 = 10 kilometers. What is the cyclist's average speed? First, add up the time to get 1 hour total. It took him 25 minutes on the way to work and 35 minutes on the way back. Then, apply the avg speed formula to get 120 miles / 2 hours = 60 mph (miles per hour).Įxample 2: A cyclist travels to and from work, covering 10 km each way. 2:10 minus 10 minutes leaves 2 hours of travel time. First, subtract the time spent at the train stops: 2.5 x 4 = 10 minutes. Finding average speed examplesĮxample 1: Using the equation above, find the speed of a train which travelled 120 miles in 2 hours and 10 minutes while making four stops, each lasting approximately 2.5 minutes. If the distance was 200 kilometers and it took 4 hours to cover it, then the speed was 200 / 4 = 50 km/h (kilometers per hour). Make sure to subtract any rests or stops made from the total trip duration.įor example, if the total distance travelled was 250 miles and the time it took was 5 hours, then the average speed was 250 / 5 = 50 miles per hour (mph). Google Maps) and measure the distance travelled based on your actual path (not via a straight line, unless you travelled by air in which case that would be a good approximation), or to use a GPS reading if you used navigation during the whole trip. ![]() If you have noted the distance on your odometer then you can use that number. Either way, one needs to know the distance. The easiest way to do that would be by using the speed calculator above, but if you prefer, you can also do the math yourself. Let us say that you travelled a certain distance with your car and want to calculate its average speed. How to calculate the average speed of a car? If distance was measured in miles and time in hours, then output will be in miles per hour (mph, mi/h), and so on for km/h, m/s, etc. For example, if you measured distance in meters and time in seconds, your output from the average speed calculator would be ft/s. The metric unit of the result will depend on the units you put in. ![]() The average speed calculation is simple: given the distance travelled and the time it took to cover that distance, you can calculate your speed using this formula:
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