- #1

rocapp

- 95

- 0

## Homework Statement

See the attached picture.

## Homework Equations

D(x,t) = Asin(kx-ωt+ϕ)

## The Attempt at a Solution

The instantaneous velocity of a particle would be the derivative of displacement:

D'(x,t) = -ωAcos(kx-tω+ϕ)

Then plug in the known values:

= -18.84cos((π/15)x-3πt)

The above should be the answer, but since I do not have a specified value for time or distance, I am not sure how to come to a numerical answer. Thanks in advance!