Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) §11.2 Planes and Projections, #40 · Multivariable Calculus · Vectors & geometry

To catch a drug runner going from … to … at 8…

All points and vectors are in the $x y$ plane.

To catch a drug runner going from $(0, 0)$ to $(4, 0)$ at 8 meters per second, you must travel from $(0, 3)$ to $(4, 0)$ at ______ meters per second. The projection of your velocity vector onto his velocity vector will have length ______.

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Gilbert Strang, Calculus, 3rd edition (Wellesley-Cambridge Press; MIT OpenCourseWare RES.18-001) · §11.2 Planes and Projections, #40

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