Rahul runs 4 miles from his house to the playground in 2 hours every day. What is his average speed?
Ans: Average Speed = total distance ÷ total time
Average Speed = 4 miles ÷ 2 hours
Average Speed = 2 miles per hour
Rahul runs 4 miles from his house to the playground in 2 hours every day. What is his average speed?
Ans: Average Speed = total distance ÷ total time
Average Speed = 4 miles ÷ 2 hours
Average Speed = 2 miles per hour
2. Anitya walks from A to B, covering 8 miles of distance, for 2 hours. What is the average speed?
Ans: Average Speed = total distance ÷ total time
Average Speed = 8 miles ÷ 2 hours
Average Speed = 4 miles per hour
Another formula is used when the speed during the journey changes. If an object covers some part of the journey with one speed and changes the speed to cover the other part of the journey, this formula is applied. Let us learn from an example.
3. An aeroplane travels from the United States to Malaysia, a distance of 9000 miles, in 18 hours and travels from Malaysia to India, a distance of 3000 miles in 5 hours.
Ans: To find the average speed of the locomotive, you will have to do the following formula.
Distance travelled = 9000 miles + 3000 miles
Distance travelled = 12000 miles
Time taken = 18 hours + 5 hours
Time taken = 23 hours
Average speed = 12000 / 23
Average speed = 521 mph
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