11. (II) What is the linear speed, due to the Earth's rotation, of a point (a) on the equator, (b) on the Arctic Circle
(latitude 66.5° N), and (c) at a latitude of 42.0°N?

Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above