scalars are quantities that are completely describe by their magnitude only
No, mass is not a scalar quantity. It is a scalar quantity. Scalars have only magnitude and no direction.
No, mass and energy are not scalars. Mass is a scalar quantity while energy is a scalar quantity.
Yes, you can add a scalar to a vector by adding the scalar value to each component of the vector.
Inertia is a scalar quantity. It is a measure of an object's resistance to changes in its state of motion and is directly proportional to its mass. Inertia does not have a direction associated with it, so it is considered a scalar.
Average speed is a scalar quantity because it only has magnitude and does not have a specific direction associated with it.
magnitude and direction
Scalar
No, mass is not a scalar quantity. It is a scalar quantity. Scalars have only magnitude and no direction.
That is how the scalar product is defined. Also, the projection of one vector onto another at an angle to it is directly proportional to the cosine of that angle.
Scalar
It is scalar
scalar
vector
Time is scalar
No, a millilitre is a measure, so it is neither scalar nor vector. It is a measure of volume and that is a scalar.
In mathematics and physics, a scalar field associates a scalar value to every point in a space. The scalar may either be a mathematical number, or a physical quantity.
No, mass and energy are not scalars. Mass is a scalar quantity while energy is a scalar quantity.