Question:
If subtraction of two vectors is also a unit vector then the angle between the first two vectors is
If subtraction of two vectors is also a unit vector then the angle between the first two vectors is
Updated On: Aug 18, 2024
- $0^{\circ}$
- $60^{\circ}$
- $90^{\circ}$
- $120^{\circ}$
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The Correct Option is B
Solution and Explanation
If two vectors $| \bar{A} | = | \bar{B} | = x$ then thhe subtraction of them is $S = 2 x $ sin $\left( \frac{\theta}{2} \right)$ .
When S is also 'x' $\theta = 60^{\circ}$
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Concepts Used:
Motion in a Plane
It is a vector quantity. A vector quantity is a quantity having both magnitude and direction. Speed is a scalar quantity and it is a quantity having a magnitude only. Motion in a plane is also known as motion in two dimensions.
Equations of Plane Motion
The equations of motion in a straight line are:
v=u+at
s=ut+½ at2
v2-u2=2as
Where,
- v = final velocity of the particle
- u = initial velocity of the particle
- s = displacement of the particle
- a = acceleration of the particle
- t = the time interval in which the particle is in consideration