Question: The displacement of an object is given by y = (5.0 cm) cos[(20 rad/s)t]. What are the objects (a) Amplitude, (b) Frequency, and (c) Period

The displacement of an object is given by y = (5.0 cm) cos[(20π rad/s)t]. What are the object’s
(a) Amplitude,
(b) Frequency, and
(c) Period of oscillation?

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