State whether the following quantity is a scalar or vector?
(a) pressure (b) force
(c) momentum (d) energy
(f) weight (f) speed.
State whether the following quantity is a scalar or vector?
(a) pressure (b) force
(c) momentum (d) energy
(f) weight (f) speed.
Vector quantities have both magnitude and direction.
Scalar quantities have only magnitude.
so
a) Pressure - Pressure is a scalar quantity, not a vector quantity. It has magnitude but no direction sense associated with it. Pressure force acts in all directions at a point inside a gas.
b) Force- It is a vector quantity
c) Momentum -- 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.
d) Energy - It is the scalar quantity
e) Weight - 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.`
f) Speed - It is a vector quantity
Vector quantities have both magnitude and direction.
Scalar quantities have only magnitude.
so
a) Pressure - Pressure is a scalar quantity, not a vector quantity. It has magnitude but no direction sense associated with it. Pressure force acts in all directions at a point inside a gas.
b) Force- It is a vector quantity
c) Momentum -- 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.
d) Energy - It is the scalar quantity
e) Weight - 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.`
f) Speed - It is a vector quantity
