A particle moves in the xy-plane with position for all real values of 
given by the parametric equations 
and 
.
-Give the coordinates of the velocity vector for any time 
.
Definitions:
Dormant Commerce Clause
A restriction on states’ authority that is implied in the commerce clause of the U.S. Constitution: The power given to Congress to enact legislation that affects interstate commerce in effect prohibits a state from passing legislation that improperly burdens interstate commerce.
Interstate Commerce
Interstate Commerce refers to the buying, selling, or moving of goods, services, or money across state borders, regulated by the federal government.
Gun-Free School Zone Act
Federal legislation in the United States that prohibits the unauthorized possession of firearms in designated school zones.
Commerce Clause
A provision in the United States Constitution that grants Congress the power to regulate trade between states, with foreign nations, and among Indian tribes.
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