question archive The bacterium E
The bacterium E
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The bacterium E. coli is a single-cell organism that lives in the gut of healthy animals, including humans. When grown in a uniform medium in the laboratory, these bacteria swim along zigzag paths at a constant speed of 21 μm/s . The following figure shows the trajectory of an E. coli as it moves from point A to point E (Figure 1) Figure 1 y (μ m) 40 20 0 x (um) 20 40 80 100 20 -40
A)
What is the magnitude of the bacterium's average velocity for the entire trip?
B)
What is the direction of the bacterium's average velocity for the entire trip?
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