Homework Help: Homework Problem: Kinematics

1. Feb 2, 2005

shawonna23

As the earth rotates through one revolution, a person standing on the equator traces out a circular path whose radius is equal to the radius of the earth (6.38*10^6). What is the average speed of this person in meters per second and miles per hour?

I am really having trouble figuring out what to do for this problem. I know that distance =2*pi*radius. That equals 4.009*10^7. I don't know what else to do

2. Feb 2, 2005

Staff: Mentor

Don't forget units: in this case, meters. (And you'll need to convert to miles.)

What the definition of average speed? speed = distance/time. Figure out the time: One day equals how many hours? seconds?