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Physics
Physics
Problem
The x- and y-components of a displacement are
A
x
=
6
m
A_x = 6\,\text{m}
A
x
=
6
m
and
A
y
=
−
8
m
A_y = -8\,\text{m}
A
y
=
−
8
m
. What is
A
\mathbf{A}
A
in unit-vector notation? a)
8
ı
^
−
6
ȷ
^
8\,\mathbf{î} - 6\,\mathbf{ĵ}
8
ı
^
−
6
ȷ
^
b)
6
ı
^
+
8
ȷ
^
6\,\mathbf{î} + 8\,\mathbf{ĵ}
6
ı
^
+
8
ȷ
^
c)
6
ı
^
−
8
ȷ
^
6\,\mathbf{î} - 8\,\mathbf{ĵ}
6
ı
^
−
8
ȷ
^
d)
−
6
ı
^
−
8
ȷ
^
-6\,\mathbf{î} - 8\,\mathbf{ĵ}
−
6
ı
^
−
8
ȷ
^
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