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Mathematics
Problem
A particle’s displacement from the origin at time
t
t
t
seconds is
s
(
t
)
=
8
cos
3
t
s(t)=8\cos 3t
s
(
t
)
=
8
cos
3
t
metres. a. (i) Find the first positive time
t
t
t
when the particle is momentarily at rest. b. (ii) Compute the acceleration of the particle at that instant.
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