posted by Don .
The earth rotates once per day about an axis passing through the north and south poles, an axis that is perpendicular to the plane of the equator. Assuming the earth is a sphere with a radius of 6.38 106 m, determine the speed and centripetal acceleration of a person situated at each of the following.
(a) the equator
(b) a latitude of 42.0° north of the equator
(a) ω=2π/24•3600 rad/s