Q. 1.State the following quantity is a scalar or vector?
(i)Pressure. (ii)Force. (iii)Momentum.
(iv)Energy. (v)Weight. (vi)Speed.
Answers
Answer:
1.scaler,2.vector,3.scalar,4.vector5.scalar,6.vector
Answer:
pressure is a scalar quantity, not a vector quantity. It has a magnitude but no direction associated with it. Pressure acts in all directions at a point inside a gas. At the surface of a gas, the pressure force acts perpendicular to the surface.
, force is a vector quantity, it is defined by its magnitude and direction. Common vector quantities are displacement, velocity, acceleration and force. Common scalar quantities are distance, speed, work and energy
by Momentum is a vector quantity. For a particle with mass, the momentum equals mass times velocity, and velocity is a vector quantity while mass is a scalar quantity. A scalar multiplied by a vector is a vector.
Energy is a scalar. This is because energy is defined as the scalar product of force(F) and displacement (S). To be clear, F and S are force and displacement vectors. Since the dot product of two vectors give us a scalar, energy is a scalar
Weight is a force which is a vector and has a magnitude and direction. Mass is a scalar. Weight and mass are related to one another, but they are not the same quantity.` ... Mass and energy are scalar quantities, while momentum is a vector quantity.
The Physics Classroom Speed, being a scalar quantity, is the rate at which an object covers distance. The average speed is the distance (a scalar quantity) per time ratio. Speed is ignorant of direction. On the other hand, velocity is a vector quantity; it is direction-aware.