Understanding the Motion of a Skydiver During Descent | Newton's Laws

[robb_]

If you have any more specific physics questions, I can answer those. Subjective questions I will not get into.

 

[imy786]

i think most of this quesitons is done- just this left-

describe his motion using Newton’s laws and
define the frame of reference that you are using to describe the motion
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Newton’s second law tells us that if a body has an acceleration g, then that body must be subject to a force, F = mg. This force, the gravitational pull on the body due to the Earth, is called the weight of the body.

 

[imy786]

is this correct??

 

[imy786]

can someone please help me on the last part of this quesiton-

describe his motion using Newton’s laws and
define the frame of reference that you are using to describe the motion
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Newton’s second law tells us that if a body has an acceleration g, then that body must be subject to a force, F = mg. This force, the gravitational pull on the body due to the Earth, is called the weight of the body.

What will his refrence point be?

need help

 

[imy786]

can anyone tell me if my last answer is correct?

 

[imy786]

describe his motion using Newton’s laws and
define the frame of reference that you are using to describe the motion...

what will be the frame of refrence?

 

[imy786]

i need hint and advie on this..describe his motion using Newton’s laws and
define the frame of reference that you are using to describe the motion

how would i describe the divers motion using Newtons law

 

[imy786]

these 2 parts i need help for this quesiton

-define the frame of refrence that you are using to describe his motion

-describe his motion using Newtons laws

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this is my final answer

Phase A= skydiver jumps out of plane traveling at speed, accelerating
phase B= traveling at terminal velocity, a=0
phase C = opens parachute; skydiver decelerates to new terminal velocity.
Drag and air resistance are the same. The chute changes the profile of the falling object. The shape of the object changes, so the drag force will change as well.
Phase D= skydiver continues at this speed till reaches ground

phase C: drag and air resistance are the same. The chute changes the profile of the falling object. The shape of the object changes, so the drag force will change as well.

During the entire fall, there are only two vertical forces, gravity and the drag force. The drag depends upon several aspects of the falling object.

Phase A and B:
downward force- gravity,
upward force- air resistance

phase C:
downward force-gravity
upward force= drag and air resistance