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Vectat À has
gnitude A and n is a
unit Vetar in
the direction as their
Which of the following are correcta
Answers
Explanation:
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11th
Physics
Motion in a Plane
Mathematical Operations on Vectors
A unit vector in the direct...
PHYSICS
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Asked on December 26, 2019 by
Manminder Malik
A unit vector in the direction of resultant vector of
A
= -2
i
^
+3
j
^
+
k
^
and
B
=
i
^
+2
j
^
-4
k
^
Here,
A
=−2
i
^
+3
j
^
+
k
^
B
=
i
^
+2
j
^
−4
k
^
The resultant vector of
A
and
B
is
R
=
A
+
B
∴
R
=(−2
i
^
+3
j
^
+
k
^
)+(
i
^
+2
j
^
−4
k
^
)=−
i
^
+5
j
^
−3
k
^
R
=
(−1)
2
+(5)
2
+(−3)
2
=
1+25+9
=
35
Unit vector in the direction of resultant vector of
A
and
B
is
R
=
R
/∣
R
∣=
35
−
i
^
+5
j
^
−3
k
^
Answer:
a unit vector contains directional information if you multiply a positive scalar by a unit vector , then you produce a vector with magnitude equal to that scalar in the direction of the unit vector