AP Calculus BC Quiz
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PARAMETRIC, POLAR, AND VECTOR FUNCTIONS
Question 1
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A particle moves with
x
(
t
)
=
ln
(
t
+
1
)
x(t)=\ln(t+1)
x
(
t
)
=
ln
(
t
+
1
)
and
y
(
t
)
=
t
y(t)=t
y
(
t
)
=
t
; what is its speed at
t
=
0
t=0
t
=
0
?
A
1
1
1
B
2
\sqrt{2}
2
C
⟨
1
,
1
⟩
\langle 1,1\rangle
⟨
1
,
1
⟩
D
5
\sqrt{5}
5
E
⟨
0
,
1
⟩
\langle 0,1\rangle
⟨
0
,
1
⟩
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