Question

The position of a particle in cm is given by *x* = (9)
cos 3*π**t*, where *t* is in seconds.

(a) What is the frequency?

Hz

(b) What is the period?

s

(c) What is the amplitude of the particle's motion?

cm

(d) What is the first time after *t* = 0 that the particle
is at its equilibrium position?

s

In what direction is it moving at that time?

* in the positive direction

* in the negative direction

Answer #1

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