Changes

<math>\bold{W} = \bold{F} \cdot \bold{d}</math>

<math>\bold{W} = \bold{F} \cdot \bold{d}</math>

Or, its integral form:

Or, its integral form:

<math>\int \bold{F} \cdot \mathrm{d}\bold{s}</math>

<math>\int \bold{F} \cdot \mathrm{d}\bold{s}</math>

Or:

Or:

''W'' = F d cos θ

<math>\bold{W} = \bold{F} \cdot \bold{d} cos θ</math>

Where θ is the angle that separates the vectors. The second form of the equation is the expanded form of the "dot product" in the first equation. In physics, the dot product "a · b" (read "a dot b") can be rewritten as "a b cos θ".  

Where θ is the angle that separates the vectors. The second form of the equation is the expanded form of the "dot product" in the first equation. In physics, the dot product "a · b" (read "a dot b") can be rewritten as "a b cos θ".