Work is scalar
Work W is both a scalar (F.D) and a vector (FxD), in short work is a Quaternion,
W = [0,F][0,D]= [00 -F.D, 0D + F0 + FxD] = [-F.D, FxD] .
Physics has yet to recognize that Work and Energy are Quaternions and thus define work and energy as a scalar. Nature and mathematics recognize work as as a Quaternion manifested by the reality of F.D and FxD.
Work is a scalar when the angle between F and D is a multiple of even 90 degrees and a torque when the angle is an odd multiple of 90 degrees.
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Work is both! The product of vector force F and vector displacement D gives two terms:
Work W= [0,F][0,D] = [0 - f.D, 0 + 0 + FxD] = [-F.D, FxD] .
Scalar work Ws= [- F.D,0]= -FDcos(FD)
and Vector Work Wv =[0, FxD]= FDsin(FD)v
When F and D are parallel work is a scalar, when F and D are perpendicular, work is a vector, otherwise, work is both a scalar and a vector.
Work like many quantities in Physics is a combination of a scalar and 3 vectors, in short a Quaternion quantity.
Velocity is a vector.Its magnitude is called 'speed'.
Gravity is a force, and forces have magnitude and direction; hence, it is a vector.
no, it's a vector dude
A vector quantity has both size (magnitude) and direction involved but a scalar quantity only has size involved and not direction.
We generally think of electric current as a scalar quantity. When we think of 1/4th amp or 20 amps, we think of an amount (a scalar quantity) of current flow. On another plane, the electromagnetic forces at work in current generation are actually force vectors. In the traditional sense, electric current, which is the movement of electrons, is from negative to positive. This is not a vector, though. In the macro or "large" world, think of current as scalar.---------------------------------------------------------------------The beauty is that though current is not a vector definitely its direction of flow is used to make length as vector. I is not vector. dl is not vector but I dl will be considered as vector. So innovative and essential concept.Current density is a vector which appears in Maxwell's equations.