Step-by-step explanation:
One everyday example that justifies the increase in drag force with the increase in speed is riding a bicycle. When you ride a bicycle, you can feel the resistance against your body as you increase your speed.
At low speeds, the drag force is relatively low. However, as you start pedaling faster and gain speed, you will notice an increasing resistance against your body. This resistance is caused by the drag force acting on you as you move through the air.
As you accelerate on a bicycle, the air molecules in front of you get compressed, creating an area of high pressure. Simultaneously, the air molecules behind you expand, creating an area of low pressure. This pressure difference creates a force that opposes your forward motion, known as drag force or air resistance.
At higher speeds, the drag force becomes more significant and requires more effort to overcome. This is why you need to pedal harder or lean forward to reduce your frontal area and decrease the resistance as you ride faster.
The experience of feeling increased resistance while cycling at higher speeds demonstrates the effect of drag force increasing with speed. This principle applies not only to bicycles but also to various other objects moving through a fluid medium, such as cars, airplanes, or even a person running against the wind.
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