average speed formula when distance is same

Found inside – Page 804If you need to calculate the speed for the entire trip, use the average speed formula: Total distance Average speed = Total time Let's go through a sample ... For example: If Ben traveled 150 miles in 3 hours, what was his average speed? Speed of second train = 42 m/s. One formula you'll use often in algebra and in everyday life is the formula for distance traveled by an object moving at a constant speed. Time can be entered or solved for in units of secondes (s), minutes (min), hours (hr), or hours and minutes and seconds (hh:mm:ss). The average speed is the distance (a scalar quantity) per time ratio. Tip 1: Use the formula. If you want to learn how to calculate average speed if there are multiples distances or amounts of time, keep reading the article! $$\frac1V=\frac1n\sum\limits_{k=1}^n\frac1{v_k}. Thus we can find the average speed as: Average Speed = (Total distance)/ (Total Time) = (1800 + 1800)/ (30 + 45) = 3600/75 = 48 km/hr. Be careful! Your problem doesn't give the distance or the time, but it does say that 1/2 of the displacement is traveled at each velocity. You dont, S = D / T. You do not have enough information. Therefore, the average speed=100/4=25 kmph. As above, the symbol is used to denote "change in" and should be read as such. Q. An object covers equal distance at speed S1 and other equal distance at speed S2 then his average speed for the distance is (2S1S2)/(S1 + S2) . the average speed is 48 M/hr. Example:  Rahul travels with the speed of 20 km per hour for the first 2 hours. Q. MathJax reference. How did they derive the equation: Average Speed = 2ab/(a + b) Applicable when one travels at speed a for half the distance and speed b for other half of the distance. . Found inside – Page B-98When distance travelled is the same in both parts of the 2ab journey, the average speed is gives by the formula i.e. a + b the harmonic mean of the two ... 10 - 1 pm = 3 hours 3 hours X 75 km . For example: For example: If Ben traveled 50 mph for 3 hours, 60 mph for 2 hours, and 70 mph for 1 hour, what was his average speed for the entire trip? On the other hand, velocity is a vector quantity; it is a direction-aware quantity. Stack Exchange network consists of 178 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. What is instantaneous speed and velocity? = = 20 seconds. For example, if Ben drives 40 mph for 2 hours, and 60 mph for another 2 hours, what is his average speed for the entire trip? If the stream flows at the rate of 3 km/h, find the speed of Vikas in still water. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/4\/45\/Calculate-Average-Speed-Step-1-Version-5.jpg\/v4-460px-Calculate-Average-Speed-Step-1-Version-5.jpg","bigUrl":"\/images\/thumb\/4\/45\/Calculate-Average-Speed-Step-1-Version-5.jpg\/aid2930985-v4-728px-Calculate-Average-Speed-Step-1-Version-5.jpg","smallWidth":460,"smallHeight":345,"bigWidth":728,"bigHeight":546,"licensing":"