1. The problem statement, all variables and given/known data The bacterium Escherichia coli (or E. coli) is a single-celled organism that lives in the gut of healthy humans and animals. When grown in a uniform medium rich in salts and amino acids, these bacteria swim along zig-zag paths at a constant speed of 20 um/s. The figure shows the trajectory of an E. coli as it moves from point A to point E. Each segment of the motion can be identified by two letters, such as segment BC. 2. Relevant equations Displacement of segment=√(segmentx2+segementy2) θ=tan-1(segmenty/segmentx) v=displacement/Δt 3. The attempt at a solution Because I think my confusion can be cleared with just on portion of this problem, let's use vector AB. Here is the question I am trying to answer: Calculate the x- and y- components of its displacement and of its velocity. I have ABx=50μm, and ABy=10μm The displacement is 50.99μm, 11° NE The problem is finding the velocity, I don't know how to do it in this instance? It doesn't give a time really, just the constant speed of 20μm/s. I can't help but to think that I'm missing something completely obvious, but I just can't figure out what to do? Thank you for any help!