One type of fluid friction is air friction, also known as air drag. These friction forces differ from the conventional model of surface friction in that they depend on velocity.
Only special cases can be treated analytically because the velocity dependence may be extremely complicated.
Air resistance for small particles is roughly proportional to velocity at very low speeds.

Unfortunately, you did not include a diagram with the location of the drawing. Assuming that the location is the launch point immediately after leaving the ramp,

The forces acting on the rocket are shown in the attached diagram; the Force is the force produced by the engines, W is the weight of the rocket and its fuel, and fr is the air friction force, which depends on the shape of the rocket, its speed, and the density of the air at different altitudes.

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