A) The earth's radius is 6.37x106m; it rotates once every 24 hours. What is the speed of a point on the earth's surface located at 1/4 of the length of the arc between the equator and the pole, measured from equator? (Hint: what is the radius of the circle in which the point moves?) Express your answer with the appropriate units.

A) The earth's radius is 6.37x106m; it rotates once every 24 hours. What is the speed of a point on the earth's surface located at 1/4 of the length of the arc between the equator and the pole, measured from equator? (Hint: what is the radius of the circle in which the point moves?) Express your answer with the appropriate units.