Solve the problem.
-An object moves along the y-axis (marked in feet) so that its position at time t (in seconds) is given by
f(t) = 
Find the velocity at three seconds.
Definitions:
Phonetic Alphabet
A system of writing developed by early Greeks that uses letters to represent spoken sounds, enabling the expression of complex ideas.
Complex Ideas
Thoughts or concepts that are intricate and composed of multiple interconnected elements, often requiring significant understanding or analysis.
Spoken Sounds
The auditory elements or phonetic units used in oral communication to convey language and meaning.
Telegraph Lines
Historically significant communication system that transmitted electrical signals over wires between distant locations to convey messages.
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