Related Pages There are three main types of average problems commonly encountered in school algebra: The following diagram shows the formula for average speed. Scroll down the page for more examples and solutions on calculating the average speed. Example: Solution: Distance = Rate × Time Step 2: Total time = 3 + 2 = 5 Step 3: Using the formula: Answer: The average speed is 54 miles per hour. Be careful! You will get the wrong answer if you add the two speeds and divide the answer by two. How To Solve The Average Speed Problem?How to calculate the average speed? Example:
How To Find The Average Speed For A Round Trip?Example:
How To Find The Average Speed Of An Airplane With Good And Bad Weather?Example:
How To Relate Speed To Distance And Time?If you are traveling in a car that travels 80km along a road in one hour, we say that you are traveling at an average of 80kn/h. Average speed is the total distance divided by the total time for the trip. Therefore, speed is distance divided by time. Instantaneous speed is the speed at which an object is traveling at any particular instant. If the instantaneous speed of a car remains the same over a period of time, then we say that the car is traveling with constant speed. The average speed of an object is the same as its instantaneous speed if that object is traveling at a constant speed.
How To Calculate Average Speed In Word Problems?Example:
How To Use Average Speed To Calculate The Distance Traveled?Example:
How To Use Average Speed To Calculate The Time Taken?Example:
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We will discuss here how to find the distance when speed and time are given. When speed and time are given, the distance travelled is calculated by using the formula: Distance = Speed × Time The unit of time in speed should be the same as that of the given time. Solved examples to calculate distance when speed and time are given: 1. How much distance will be covered in 5 hrs at a speed of 55 km per hour? Solution: Distance covered in 1 hour = 55 km. We know, Distance = Speed × Time Distance covered in 5 hrs = 55 × 5 = 275 km. Therefore, distance covered in 5 hrs = 275 km. 2. A bus travels at a speed of 45 km/hour. How far will it travel in 36 minutes? Solution: Speed = 45 km/hour Time = 36 minutes = 36/60 Hour (Since we know, 1 hour = 60 minutes) = 3/5 hour Distance = speed × time = 45 × (3/5) km = (45 × 3)/5 km = 27 km. 3. How much distance will be covered in 7 hrs at a speed of 62 km per hour? Solution: Distance covered in 1 hour = 62 km. We know, Distance = Speed × Time Distance covered in 7 hrs = 62 × 7 = 434 km. Therefore, distance covered in 7 hrs = 434 km. 4. Mike drives his car at a speed of 70 km per hour. How much distance will he cover in 3 hours 30 minutes? Solution: Speed of the car = 70 km/hr Time taken = 3 hours 30 minutes = 3 ½ hours. Distance covered in 1 hour = 70 km Distance covered in 3 ½ hour = 70 × 3 ½ km = 70 × 7/2 km = 245 km. 5. How much distance will be covered in 1 ½ hour at a speed of 32 m per minute? Solution: [1 ½ hr = (60 + 30) minutes = 90 minutes]. Distance covered in 1 minute = 32 metres. Distance covered in 90 minutes = 32 × 90 = 2880 m. We know, 1 m = 1/1000 km. = 2880/1000 km. = 2.88 km. Note: In the above example, since the speed is expressed in minutes, time has to be taken in minutes. We should take care that the unit of time in both speed and time is the same. ● Speed Distance and Time. Relation of Speed Distance and Time Express Speed in Different Units To find Speed when Distance and Time are given. To find the Distance when Speed and Time are given. To find Time when Distance and Speed are given. Worksheet on Expressing Speed in Different Units Worksheet on Speed, Distance and Time. 5th Grade Numbers Page 5th Grade Math Problems From To find the Distance when Speed and Time are given to HOME PAGE
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