A falling skydiver has a mass of 101 kg. What is the magnitude of the skydiver's acceleration when the upward force of air resistance has a magnitude that is equal to one-fourth of his weight?

Explanation:

When the skydiver is falling towards the ground, there are two forces acting on him:

- The force of gravity, downward, of magnitude , where

is the mass of the skydiver

is the acceleration due to gravity

- The air resistance, upward, of magnitude

The net force on the skydiver must be equal to the product between mass and acceleration, so we can write:

where a is the acceleration.

Here we are told to find the acceleration of the skydiver when the magnitude of the air resistance is 1/4 of his weight, which means

Substituting into the equation and solving for a, we find the acceleration:

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

hope this ! this is not copied! search it up, it's free of plagiarism!