Assume the earth is spherical. Relative to someone on the rotation axis, what is the linear speed of an object on the surface if the radius vector from the center of the earth to the object makes an angle of 62.0 degrees with the axis of rotation. Radius of the earth = 6.37·103 km I know that the earth is rotating, 7.29E-05 in radians/second. Also, I think the formula to find linear speed for motion in a circle is the radius times the angular velocity. I get an angular velocity of 850480.10973937 r/s and I do not think this is right?