The earthÕs curved surface
means that objects are moving at very
different speeds depending on their
latitude:
At the equator
(latitude 0¡), an object is moving
at a speed of about 1700
km/hr.
At the pole (latitude
90¡), an object moving
hardly at all due to the earthÕs
rotation.
Here in Los
Angeles (latitude 34¡N), an object
is moving at a speed of about
1400 km/hr (=860 miles/hr!).