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Physics
Physics
Problem
The position of a particle is given by
r
(
t
)
=
⟨
5
cos
t
,
5
sin
t
,
12
t
⟩
r(t)=\langle 5\cos t,\,5\sin t,\,12t\rangle
r
(
t
)
=
⟨
5
cos
t
,
5
sin
t
,
12
t
⟩
. What is the speed of the particle for any value of
t
t
t
? a)
25
+
144
t
2
\sqrt{25+144t^{2}}
25
+
144
t
2
b)
17
17
17
c)
13
13
13
d)
12
12
12
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