January 1998 U.S. Fish & Wildlife Service American Alligator Alligator mississippiensis A member of the crocodile family, the American alligator is a living fossil from the Age of Reptiles, having survived on earth for 200 million years.anuary 1998 U.S. Fish & Wildlife Service American Alligator Alligator mississippiensis A member of the crocodile family, the American alligator is a living fossil from the Age of Reptiles, having survived on earth for 200 million years.
Tangential Speed is equal to the instantaneous linear speed of the particle at any point on the curved path. Tangential speed at any point is equal to the multiplication of the radius of curvature and angular speed at a particular point on the curved path. Angular speed is defined as the time rate of change of the angular displacement along the curved path.
The metre is the length of the path travelled by light in vacuum during a time interval of 1/299,792,458 of a second. This defines the speed of light in vacuum to be exactly 299,792,458 m/s. Unfortunately it doesn't mention anything about inertial frames, but you can consider a measurement in an inertial frame to be implied. However, this is not the end of the matter. The SI is based on very practical considerations.