The drag force pushes opposite your motion as you ride a bicycle. if you double your speed, what happens to the magnitude of the drag force? the drag force goes up by a factor of 4 the drag force stays the same. the drag force decreases. the drag force doubles as well

Explanation:

The Drag Force equation is:

  (1)

Where:

 is the Drag Force

 is the Drag coefficient, which depends on the material

 is the density of the fluid where the bicycle is moving (air in this case)

is the transversal area of the body or object

the bicycle's velocity

Now, if we assume , and do not channge, we can rewrite (1) as:

  (2)

Where  groups all these coefficients.

So, if we have a new velocity , which is the double of the former velocity:

  (3)

Equation (2) is written as:

  (4)

Comparing (2) and (4) we can conclude the Drag force is four times greater when the speed is doubled.

c)as speed changes, wavelength and frequency change.

everything changes!