CLASS 11 - NCERT - PHYSICS - MOTION IN A PLANE | QUIZ SMART | SCORE HIGH | GUARANTEED ACCURACY!

CLASS 11 - NCERT - PHYSICS - MOTION IN A PLANE |
QUIZ SMART | SCORE HIGH | GUARANTEED
ACCURACY!
What are scalar quantities? - Answer: Physical quantities which have only magnitude
which can either be negative or positive and a unit of measure.



Eg- mass, distance, average speed, temperature,

Instantaneous speed, energy, pressure

Density, charge



What are vector quantities? - Answer: Any physical quantity which have both magnitude
and direction . They follow laws of vector algebra .



Eg - momentum, velocity, impulse, angular momentum, torque, gravitational field,
electric field, magnetic field



What are parallel vectors? - Answer: If two vectors have same direction, they are
parallel to each other.



What are anti-parallel vectors? - Answer: When two vectors are in opposite direction,
they are said to e anti-parallel.



What are equal vectors? - Answer: If two vectors have same magnitude and direction,
they are parallel to each other.



What is a zero vector? - Answer: It is a vector with zero magnitude and undefined
direction.




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