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Mathematics
Mathematics
Problem
Given
A
=
2
i
+
3
j
m
\mathbf{A}=2\mathbf{i}+3\mathbf{j}\,\text{m}
A
=
2
i
+
3
j
m
and
B
=
k
i
−
4
j
m
\mathbf{B}=k\mathbf{i}-4\mathbf{j}\,\text{m}
B
=
k
i
−
4
j
m
, the magnitude of their resultant
R
=
A
+
B
\mathbf{R}=\mathbf{A}+\mathbf{B}
R
=
A
+
B
is
5
m
5\,\text{m}
5
m
. Determine the value(s) of
k
k
k
.
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