Intro to Work Bookmark this page Worksheets due Dec 15, 2022 10:00 PST Completed The definition of work by a mechanical force on an object moving along a straight path: W = F . F (Work done by a constant force) F. The definition above uses the scalar or dot product of two vectors. As the picture suggests, only the components of the force that is aligned with the displacement matters. The formal definition of the dot product is: A. B = AB cos (o) If we write the vectors in components, we obtain: ÷ B= A,B, + AyBy The sign of the work done follows directly from the dot product and the angle between the two vectors. Q7.4 1/1 point (graded) Consider the two vectors below. À= 41 + 23 ?=53 + 3k What is the dot product A. B? 10 V 10