Department of Pre-University Education, KarnatakaPUC Karnataka Science Class 11

# Does the Phrase "Direction of Zero Vector" Have Physical Significance? Discuss It Terms of Velocity, Force Etc. - Physics

Does the phrase "direction of zero vector" have physical significance? Discuss it terms of velocity, force etc.

#### Solution

A zero vector has physical significance in physics, as the operations on the zero vector gives us a vector.
For any vector $\vec{A}$ , assume that

$\vec{A} + \vec{0} = \vec{A}$

$\vec{A} - \vec{0} = \vec{A}$

$\vec{A} \times \vec{0} = \vec{0}$
Again, for any real number λ we have:
$\lambda \vec{0} = \vec{0}$
The significance of a zero vector can be better understood through the following examples:
The displacement vector of a stationary body for a time interval is a zero vector.
Similarly, the velocity vector of the stationary body is a zero vector.
When a ball, thrown upward from the ground, falls to the ground, the displacement vector is a zero vector, which defines the displacement of the ball.
Concept: Fundamental Forces in Nature
Is there an error in this question or solution?

#### APPEARS IN

HC Verma Class 11, Class 12 Concepts of Physics Vol. 1
Chapter 2 Physics and Mathematics
Short Answers | Q 3 | Page 27

Share