A skydiver jumps out of a plane wearing a suit which provides a deceleration due to air resistance of 0. 45 m/s^2 for each 1 m/s of the skydivers velocity. Set up an initial value problem that models the skydivers velocity (v(t)). Then calculate the skydivers terminal speed assuming that the acceleration due to gravity is 9.8m/s^2 slader.

Explanation:

When the skydiver accelerates in the downward direction then tends to gain speed with each second. More is the resistance in air more will be the increase accompanied by the skydiver.

As a result, a point will come where air resistance force is balanced by gravitational force. Hence, the skydiver will attain terminal velocity.

So, air resistance for 1 = 0.45

Air resistance for v = 0.45 v

As acceleration = change in velocity w.r.t time

                 a = = 0.45

            = 0.45t

Now, we will integrate both the sides as follows.

            ln V = 0.45t

                V =

Since,           (in the given case)

so,                    ma = mg

On cancelling the common terms the equation will be as follows.

                     0.45 v = 9.8

                         v = 21.77

Thus, we can conclude that the skydivers terminal speed is 21.77 .

the focus of lesson 1 is newton's first law of motion - sometimes referred to as the law of inertia. newton's first law of motion is often stated as. an object at rest stays at rest and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

explanation:

electromagnetic shielding is the practice of reducing the electromagnetic field in a space by blocking the field with barriers made of conductive or magnetic materials. shielding is typically applied to enclosures to isolate electrical devices from their surroundings, and to cables to isolate wires from the environment through which the cable runs. electromagnetic shielding that blocks radio frequency electromagnetic radiation is also known as rf shielding.

the shielding can reduce the coupling of radio waves, electromagnetic fields and electrostatic fields. a conductive enclosure used to block electrostatic fields is also known as a faraday cage. the amount of reduction depends very much upon the material used, its thickness, the size of the shielded volume and the frequency of the fields of interest and the size, shape and orientation of apertures in a shield to an incident electromagnetic

from wikipedia