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Motion in A Plane
Question
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Define zero vector. What is its direction? Give two examples of zero vector.

Answer

When the magnitude of a vector is zero, it is known as a zero vector. Zero vector has an arbitrary direction. 
Examples: (i) Position vector of origin is zero vector.
(ii) If a particle is at rest then displacement of the particle is zero vector. 
(iii) Acceleration of uniform motion is zero vector.

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Some More Questions From Motion in A Plane Chapter

Which of the followings is/are vector quantities: work, power, acceleration, mass, momentum?

Pick up the odd one from the following: force, linear momentum, mass, impulse.

Pick out the only vector quantities in the following list:
Temperature, pressure, impulse, time, power, total path length, energy, gravitational potential, coefficient of friction and charge.

Pick out the two scalar quantities in the following list:
force, angular momentum, work, current, linear momentum, electric field, average velocity, magnetic moment, reaction as per Newton’s third law, relative velocity.

What are polar vectors?

Give two examples of polar vectors.

What are axial vectors?

Give two examples of axial vectors.

What are tensors?

Give one example of tensor.