Rotation Speed of the Earth 
The angular velocity of rotation of the Earth is the same
at any latitude from pole to pole. But the linear (tangential) velocity of
rotation depends on what latitude you reside, with the maximum tangential
velocity being at the Equator.
One method of determining how fast the Earth is rotating where you
live could come from the difference in Sunrise times between two places
with different longitudes. Determining the distance between two locations
in the direction of the Earth's rotation, and dividing by the difference
in Sunrisetime between those places should enable a good approximation
of the local tangential velocity of rotation. However, this is just an
approximation.
There are several sources for finding Sunrise, notably your local newspaper. But where do THEY get THEIR information? Researching this information, as well as considering the actual direction of rotation of the Earth as evidenced by Sunrise data from other locations is an excellent collaborative activity! A good source for this kind of information may be found at the US Naval Observatory. Use the Data Services link at this site to calculate sunrise, sunset, moon rise, and moon set for any latitude and longitude you can think of. It also works for most US cities.
Investigation QuestionsWe have spent many hours looking at sunrise/sunset data and trying to figure why the times are what they are. After some investigation, we realized that we understand much less about the Earth's orbital dynamics than we originally thought. We have been forced to think about how the tilt of the Earth's axis, the Earth's revolution, and the Earth's orbit all affect sunrise and sunset times. Below are some questions to help you in your research.
Questions

