For slowly moving objects, the drag force in water is approximately proportional to the speed of the object. The Escherichia coli (E. coli) bacterium propels itself slowly through water by means of long, thin structures called flagella.

If the force exerted on the water by the flagella doubles,

the velocity of the bacterium ...

doubles.

does not change.

increases by a factor of four.

decreases by a factor of four.

decreases by half.

Question

Physics

Lisa Colon

6 October, 18:17

For slowly moving objects, the drag force in water is approximately proportional to the speed of the object. The Escherichia coli (E. coli) bacterium propels itself slowly through water by means of long, thin structures called flagella.

If the force exerted on the water by the flagella doubles,

the velocity of the bacterium ...

doubles.

does not change.

increases by a factor of four.

decreases by a factor of four.

decreases by half.

+4

Answers (1)

Know the Answer?

Faith Kim · Answer 1

doubles.

Explanation:

force = k * v

where k is a constant and v is the velocity of the object.

when the force on the water doubles,

the velocity of bacterium will also double.