What is scalar and vectors quantities?
An object being pushed upwards by one Newton of force and from the side by two Newtons of force, for example, might be illustrated with one vector arrow pointing upward from the center of the object and another, twice as long, pointing from the center of the object to the side. Such illustrations are invaluable in physics, because they allow one to apply mathematics (trigonometry, in this case) to determine the resulting force (scalar) and direction (vector).