it is scalar as readings on Any scale is scalar.
A vector quantity.
Velocity is a vector quantity.
No, electric potential is a scalar quantity, not a vector quantity.
Momentum is a vector quantity. We know that momentum is the product of mass and velocity, and velocity has direction. That makes velocity a vector quantity. And the product of a scalar quantity and a vector quantity is a vector quantity.
A basic vector quantity is velocity, which includes both magnitude (speed) and direction. It describes how fast an object is moving and in which direction.