0
The distance up a hill and down the other side is the same A car averages 30mph going up and 60mph going down the other side What is the average speed of the car overall Explain how u get the answer?
Wiki User
∙ 14y ago
The average is 40 mph because if you go up a hill that is 60 miles long, it will take you two hours. And if you travel down 60 mph, it will take you one hour. Divide 120 miles (60 miles going up, 60 miles coming down) by three hours (two hours going up, two hours going down) and you get an average of 40 mph.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
Is displacement or distance independent of path?
Displacement and overall distance are but the distance travelled does depend on the path.
Which factor has a greater overall effect of the gravitational force is it mass or distance?
Distance.
What is the thinking distance the braking distance and the overall stopping distance for a veichle travelling at 20mph?
10 meters for thinking distance and 17 meters for stopping
Average speed and instantaneous speed?
Average speed = (distance covered) divided by (time to cover the distance). If I leave the house at 8:00 in the morning, drive 20 miles to the office, stay in my office until late afternoon, leave the office and drive 20 miles home, and arrive home at 6:00 in the evening, my average driving speed for the day is (40 miles) divided by (10 hours) = 4 miles per hour.
Why is displacement different than distance?
Displacement is different than distance in that distance refers to how much ground an object has covered when in motion. Displacement is how far out of place the object is, or its overall change in position after being moved.
What does average speed mean?
The Average Speed means the total distance the object travels and the overall time it takes.
Which foam has the best overall properties Explain your answer?
Which foam has the best overall properties? Explain your answer.
How do you calculate an overall average from a set of component averages?
I recommend you do not try to average a set of components, because your result may be not be accurate. The best way to find an overall average is to average the entire data set.EXAMPLE: You have three columns of ten numbers each with an average listed at the bottom of each, say A11, B11, and C11. There are two ways you can solve this:Combine all the averages and divide by 3. [=SUM(A11:C11)/3] - But, the result may not reflect the average of the entire data set.Calbulate the average for all 30 numbers in the data set. [=SUM(A1:C10)/30] - This would give a much more accurate representation of the entire data set.
Is an average of a set of numbers the same as the average of the averages of the subsets of numbers?
No, it is not. Example: the average of (5 and 7) is 6, and the average of (50, 60 and 70) is 60, but if we add all five numbers we have 192, so the overall average is 192 divided by 5 = 38.4 and the reason for that is we have more and bigger numbers in the second set.
Is displacement or distance independent of path?
Displacement and overall distance are but the distance travelled does depend on the path.
What is London England's average year round temperature?
Average daytime high temperatures go from 7 (45) in January to 22 (72) in July.Nightime lows go from 2 (36) to 13 (57).Monthly averages go from 5 (41) to 18 (64).The overall yearly average is a minimum 8 (46) and maximum 14 (58) with an overall average of 11 (52).All figures are Celsius (Fahrenheit in parentheses).See the Related Link
How far is Mexico from the equator?
At its most southern point, Mexico is about 999 miles from the equator. Overall, the average distance from Mexico to the equator is 1,581 miles.
How do you work out the average speed?
That depends on that data you have.If you have a start and finish time, and the overall distance then you divide the distance in miles (or other units) by the number of hours and you'll get miles per hour.If I leave home at 07:15 and get to work at 9:00, having travelled 6.5 miles then I have an average speed of 6.5 / 1.75 = 3.71 mph. (but that's enough about the Dublin bus service!)If you have two or more different speeds, and the length of time each was travelled then you wan work out the overall distance and the overall time, and proceed as above.
Which factor has a greater overall effect of the gravitational force is it mass or distance?
Distance.
Explain how the values of the slope affect the overall meaning of the equation?
how the values of the slope affect the overall meaning of the equation?
What is the overall stopping distance for 30mph?
75 Feet
Is an average of averages accurate?
Mx = MM is the greek letter mu, by the way.Statistically speaking, an average of averages within a sample is said to very closely approximate the population average. However, where the sample size is under 30, there needs to be an adjustment for size. If the sample is over 30 (thus you are averaging over 30 averages), then this should reflect very closely the population average. It is not perfect but statistically it is incredibly close.However, it is important not to compare apples and oranges in general so while giving mu of mu, be sure to include the standard deviation and any notes you find relevant.Average of averagesYou're living dangerously.If the averages don't have equal weight, your average of averages will yield skewed results. Here's why.Let's say you're trying to calculate your overall average grade for all the tests you've taken in school, and let's say you are taking only math, English, and science. Let's say your average in math is 80, English is 85, and science is 90. The average of those averages is, of course, 85. But is that your true average?Not if you took ten math tests, five English tests, and only two science tests!! If all those tests have equal value, then your average is closer to 80, because the ten math tests dominate the true average. In other words, your true average is the WEIGHTED average of the three averages. To weight them properly, you must think of the math average as not one data point but ten data points, the English average as not one data point but five, and the science average as not one but two data points.Here's how the weighted average math looks:10 x 80 = 8005 x 85 = 4252 x 90 = 180__ ___17 1405Now, divide 1405 by 17. So, 1405/17 = 82.7. (The 17 is the sum of the weighting factors, which, as you can see, is equal to the total number of tests you took.)So, you can see that taking the average of averages may give erroneous results -- unless you find the weighted average.
