On page 111 of your reading material there is a problem that requires you to calculate the average speed for a daylong bus trip. The rest stops the driver made are included in the calculations because that is how the problem is defined. However, suppose the bus driver’s manager wants to know the average speed at which the driver was actually driving the bus that day while he was on the road. In this case, the rest stops wouldn’t count, because the bus wasn’t moving during those intervals. Recalculate the speed omitting the rest stops. What was the average speed while the bus was in motion? (Hint: if the total time does not come out to an even number of hours, convert the hours to a decimal value before solving the formula. For example, an hour and a quarter becomes 1.25 hours.)
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GENRAL SCIENCE: INTRODUCTORY FACTS AND CONCEPTS, VOLUME TWO, PAGE 111
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Subtract the rest period times, and divide the Time/Distance again.
The correct answer is B which is 73.5 km/h
To calculate the average speed of the bus while it was in motion, we need to exclude the time spent during the rest stops.
Here's how you can calculate the average speed while the bus was in motion:
1. Identify the total distance traveled by the bus during the daylong trip. The distance can be found in the problem on page 111 of your reading material.
2. Identify the total time spent on the road while the bus was in motion. This can be done by deducting the total time spent at rest stops from the total time mentioned in the problem.
3. Convert the total time spent on the road to decimal value if it is not an even number of hours. For example, if the total time on the road is 4 hours and 30 minutes, it should be converted to 4.5 hours.
4. Use the formula "Average Speed = Distance / Time" to calculate the average speed while the bus was in motion.
Let's use an example for better understanding. Suppose the total distance traveled by the bus is 300 miles, and the total time mentioned in the problem is 10 hours, but the bus spent 1 hour at rest stops.
Thus, the time spent on the road while the bus was in motion is 10 - 1 = 9 hours.
Now, you can calculate the average speed using the formula "Average Speed = Distance / Time". In this case, the calculation would be "Average Speed = 300 miles / 9 hours = 33.33 miles per hour."
Therefore, the average speed while the bus was in motion is approximately 33.33 miles per hour.