What is the speed in miles per hour of the earth in its orbit around the sun (given:orbit is a circle)?

Answer 1

Hi. The radius of a circular would be 93,000,000 miles, times 2 for the diameter, times pi for the circumference in miles. Divide this to get whatever units you want.

Answer 2

There are two velocities: the velocity of the earth as it rotates and the velocity of the earth as it revolves around the sun. For the first, the velocity is about 1060 miles/hour at the equator. For the second, you would multiply 93,000,000 miles by
2*pi to get the distance traveled in a year, and divide that by 365*24 hours. I think that is about 65000 miles/hour.

Answer 3

Circumference of the orbit is 2 times pi times 93,000,000 miles. Time is 365.25 days times 24 hours. Divide the first answer by the second to get the speed in miles per hour.

Answer 4

Do the math! The sun is 93 million miles from the sun. Model the orbit as a circle. C = 2 * Pi * R. All you need NOW is the diameter of the sun, but since it is SO small when compared to the earth's orbit, you may be able to justify ignoring it.

Again, you are modeling it as a circle. Easy stuff. Do your OWN homework.

Since you know that the sun does ONE rotation of the sun in ONE year, you will need to figure that out in terms of hours since you are going to determine earth's speed in terms of mph. This is a fifth-grade assignment. ANY fifth-grader can do this! Are you smarter than a fifth-grader?

Answer 5

Do the arithmatic yourself. Find the circimference of a circle with a radius of 93 million miles.This is the distance earth travels in one year.Find the number of hours in a year and apply D=RT. This will be the speed of the eart h in miles/hour.
You're welcomed.

Answer 6

For a circular orbit, the velocity of a body is calculated by

v = sqrt(mu/r)

r can be taken as the average radius of the earth's orbit around the sun,

mu = M*G,

G is the gravitational constant (not the same as g = 9.80....)
M is the mass of the sun.

Look these up and you should get roughly 29-30 km/s ~ 67,000 mph

Answer 7

About 66,000 miles per hour. I hadn't heard our speed was 18.5 miles per second - I thought it was about 15 miles per second.

Hmmm... Our orbit is about 93,000,000 miles X 2 X pi, or about 584,335,740 miles in circumference. Divide that by 365.25 days, you get 1,599,824 miles per day, divide that by 24, you get 66,659 miles per hour. Divide that by 3600 (60 minutes/hour X 60 secs/minute) you get: 18.516 miles per second...

Huh - I stand corrected.

Answer 8

It averages out to about 107,000 km/h, or 66,500 mph, but because of the slightly elliptical orbit, the speed varies about 2,000 km/h, or 1200 mph.

Answer 9

66629.1383 miles per hour. That's sixty-six thousand, six hundred and twenty-nine point one three eight three if you prefer it in word form.

Answer 10

18.5 miles per second. You do the rest of the math.