The average speed in case of a journey from X to Y at speed of A m/sec and returning back to X at a speed of B m/sec, is. To find the speed, we need distance traveled over some known time period. Example 3: Two trains, 100 m and 80 m in length are running in the same direction. Solution. This is the aptitude questions and answers section on "Time and Distance" with explanation for various interview, competitive examination and entrance test. How long would it take him to go by scooter both ways? Speed= 600 / 150 = 4 m/sec ty = time when mode of transport y is used single way. Distance covered = 600m, Time taken = 2min 30sec = 150sec, Therefore, speed = Distance / Time By using speed, time and distance formulas we can easily find the three values. With this information, it's possible to find the distance the object has traveled using the formula d = s avg × t. Find values for average speed and time. If the whole journey took 5h 48 min.fin the distance of home and school. Make sure you convert the units so both their distance and time components match, or use our trip duration calculator above which will handle conversions automatically. He then travels another 600km at 40kmph. 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. The answer was in miles. Example 8: A train 300 meters long has a speed of 10 m/s. = hours, where L₁ and L₂ are length of trains. • 1kilometre = 1000 metre = 0.6214 miles • 1yard = 3 feet E.g. Example 4: Two trains, 100 m and 80 m in length are running in opposite direction. In the other case if two trains are moving in the same direction with a speed of X km/hr and Y km/hr respectively, then (X – Y) is their relative speed. }{=}65\cdot 8[/latex]. The unit of the result will depend on the units you input, but our speed calculator will conveniently display additional units where appropriate. Plug in the distance for the variable "d." Then, plug in the time for the variable "t." Divide the distance by the time to … Solution: Here Length of first train = 100 m, (since trains are running in opposite directions), Example 5: The driver of a maruti car driving at the speed of 68 km/h locates a bus 40 metres ahead of him. You can easily set a new password. The answer is 2450 / 5 = 490 mph (miles per hour) average speed. For the first case the time taken by the trains in passing each other. Since you know time and the distance, you can solve for velocity by plugging in the distance formula in physics: V = \dfrac{\bigtriangleup x}{t} V = \dfrac{38}{1.5} = 25.3. Make sure you subtract any rests or stops you made from the total trip duration. Another Train treated as an object) in time t, Note – In Case for Train 2 is treated as an object, Read Also: Tips And Tricks to solve Speed, Time and Distance question, You can find formulas here – https://prepinsta.com/boats-and-streams/formulas/. The concept of Time & Distance remains the same, but the variety of questions is different. See our full terms of service. No.1 and most visited website for Placements in India. S1 = 60, S2= 40 Say you travelled a certain distance with a car or another vehicle and you want to calculate what its average speed was. Best of luck for your exam. the result is a true statement. Force formula needs time, distance and power as inputs, but whereas power formula requires force, distance and time … Example: If a truck travelled at an average speed of 80 km per hour for 4 hours, how many miles did it cover in that time? • 1yard = 3 feet Further information stay connected with us. 2 of 6 STEP 1 - Write the formula Speed = Distance/Time on the board. WHAT YOU NEED: A whiteboard, pens, a board rubber and a calculator to check your answers. Another man leaves the point B at t₃ and reaches the point A at t₄, then they will meet at. By using speed, time and distance formulas we can easily find the three values, Formula for Conversion of Km/hr to m/sec where x is in Km/hr, Formula for Conversion of m/sec to Km/hr where x is in m/sec, 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), When Train Crosses a Stationary Object with no Length(e.g. The distance formula is: Distance = Speed * Time. In the following video we show another example of how to find rate given distance and time. Average speed = (2×25×4)/ 25+4 =200/29 km/hr [latex]520\stackrel{? Do you know what distance you traveled if you drove at a steady rate of [latex]60[/latex] miles per hour for [latex]2[/latex] hours? = hours, where L₁ and L₂ are length of trains. The time taken by a train, X metre long to pass a signal post is the time taken for the train to cover X metres. Then use that as an input for a pace calculator or the formula above. Solution – Length of a train = 20× 10 = 200 m. (8) A man walk at the rate of 4km/h and cover a distance in 2hr 45 min . • 1mile = 5280 feet. (2) A boy traveling from his home to school at 25 km/hr and came back at 4 km/hr. Find the original speed. t₂x = time when mode of transport x is used both ways. Thus distance is the product of speed with time. Here’s the basic formula for distance (d), which equals speed (called velocity in science and represented by v) multiplied by time (t): From this simple formula, you can derive these other formulas as well: By knowing any two of the components, you can use these formulas to figure out the third. Solution – Given , Speed = 63 miles , reduce ratio= 9/8 If you said [latex]120[/latex] miles, you already know how to use this formula! Contact UsAbout UsRefund PolicyPrivacy PolicyServices DisclaimerTerms and Conditions, Accenture = 1200/ 5/3 Works with miles, feet, kilometers, meters, etc.. If you know 2 of the 3 variables the third can be calculated. As usual, make sure that the time unit of the speed measure is the same as the time unit for the duration of the trip. = 2m/s It is a vector quantity holding both magnitude and direction. The formula for distance, if you know time (duration) and the average speed, is: d = v x t. where v is the velocity (average speed), t is the time and d is distance, so you can read it as Distance = Speed x Time. The distance here will be same as the length of the train. length of the train + the length of the platform. For example, if two trains are moving in opposite direction with a speed of X km/hr and Y km/hr respectively, then (X + Y) is their relative speed. • 1mile = 1760 yards 1 km = 1000m. Distance, speed and time formulae. The concept of Time & Distance is used for questions relating to a different topic such as motion in a straight line, circular motion, races, and clocks, etc. First, calculate 80 * 4 = 320 km, then convert km to miles by dividing by 1.6093 or by using our km to miles converter to get the answer: 198.84 miles. Example 6: A train starts from A to B and another from B to A at the same time. Speed is equal to the distance traveled divided by the time taken. (4) A person crosses a 600 m long street in 5m. Example 7: A boy walking at 3/5 of his usual speed, reaches his school 14 min late. Had he moved 3 km/h faster, he would have taken 20 min less.