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Physics
Physics
Problem
A particle moves along the
x
x
x
–axis with velocity
v
(
t
)
=
t
2
−
5
t
+
6
v(t)=t^{2}-5t+6
v
(
t
)
=
t
2
−
5
t
+
6
meters per second, where
t
t
t
is in seconds. For
0
≤
t
≤
5
0\le t\le 5
0
≤
t
≤
5
, at which time(s) is the particle at rest? a)
t
=
2.5
s
t=2.5\,\text{s}
t
=
2.5
s
b)
t
=
2
s
only
t=2\,\text{s}\,\text{only}
t
=
2
s
only
c)
t
=
2
s
and
t
=
3
s
t=2\,\text{s}\,\text{and}\,t=3\,\text{s}
t
=
2
s
and
t
=
3
s
d)
t
=
1
s
and
t
=
4
s
t=1\,\text{s}\,\text{and}\,t=4\,\text{s}
t
=
1
s
and
t
=
4
s
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