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A motor car covered a distance of 100 miles four times The first time at 100 mph the second at 40 mph the third at 80 mph and forth at 50 mph Calculate the average speed and explain the?
Wiki User
∙ 14y ago
First journey: 1 hour; second 2½ hours; third 1¼ hours and fourth 2 hours. Total 400 miles in 6¾ hours = 59¼ mph, (actually 59.259259)
To work it out, you have to bear in mind that each time you travel 100 miles. If it is going a hundred miles per hour, it will take an hour. All you have to do is alter the speed so it goes to a hundred for example: If you double 40 you will get 80 which takes two hours but still doesn't reach a hundred miles. The, as you need 20 more, you half 40 and add it on bringing the total time to 2 and a half hours.
Wiki User
∙ 14y ago
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Explain how to calculate average speed?
Average speed = d/t (distance covered in some period of time) divided by (the length of time to cover it)
Can you explain how you calculate it?
Math.
Explain how to find the average speed of a car that travels 300 kilometers in 6 hours?
Average speed = Distance travelled/Time spent = 300/6 = 50 km per hour.
How do you calculate a variance covariance matrix explain with an example?
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Explain how distance time and velocity are related to each other?
They are related through the formula distance = time x velocity (assuming constant velocity).
Explain how to calculate average speed?
Average speed = d/t (distance covered in some period of time) divided by (the length of time to cover it)
Explain why the eath look blue from a distance?
Because 75% of it is covered in water.
How do you calculate the orbital period of the planet and calculate it planet has an average distance to the sun of 3.36 AU. In two or more complete sentences explain.?
Here is the calculation:P squared = A cubedP squared = 3.36 cubedP squared = 37.9330P = 6. 1589
Explain in a physics way how to find the average speed for a trip in your car?
Distance travelled/ Time to get there
If you want to go an 80 kmph average velocity on a trip and you go 57kmph on the first half how fast do you need to be going the second half of the trip to reach the 80kmph average and explain?
Assume any distance. The calculation is the same for any distance, so you can either assume a distance, or use a variable such as "d" for the distance. Calculate how long the trip should take in total, and how much time you spent on the first half. Then use the remaining time for the remaining distance. For all of these calculations, the basic formula is: distance = speed x time.
Name something about Santa's Christmas Eve trip that's hard to explain using logic?
distance covered flying speed of trip down the chimney
Name Something About Santa's Christmas Eve Trip That's Hard To Explain Using Logic.?
distance covered flying speed of trip down the chimney
Explain how to find the average speed of a car that travels 300 kilometers in 6 hours. then find the average speed?
Divide the distance travelled by the time taken....
Can you explain how you calculate it?
Math.
Explain how to find the average speed of a car that travels 300 kilometers in 6 hours?
Average speed = Distance travelled/Time spent = 300/6 = 50 km per hour.
How do you calculate a variance covariance matrix explain with an example?
variance - covariance - how to calculate and its uses
Mercury has an average distance to the sun of 0.39 AU. In two or more complete sentences explain how to calculate the orbital period of Mercury and then calculate it.?
According to Kepler's law, the expression P2/a3 is approx equal to 4pi2/GM where P = period,a = average orbital distance = 0.39 AU = 58,343,169,871 metresG = universal gravitational constant = 6.67408*10^-11 m3 kg-1 s-2M = mass of the Sun = 1.989*1030 kilograms.Substituting these values into the expression and solving givesP2 = 59061382597774 seconds2 which implies that P = 7685140 seconds. This equals 88.9 Earth days.
