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# How to calculate terminal velocity ? watch

1. Hi I'm not sure on how to calculate terminal velocity I've looked online and in my textbook and I'm still confused. The data I have is

the mass of the sky diver
gravity of earth
drag coefficient of sky diver

2. (Original post by Cinna21)
Hi I'm not sure on how to calculate terminal velocity I've looked online and in my textbook and I'm still confused. The data I have is

the mass of the sky diver
gravity of earth
drag coefficient of sky diver

Have you learnt the drag equation and do you know the time?
3. (Original post by Cinna21)
Hi I'm not sure on how to calculate terminal velocity I've looked online and in my textbook and I'm still confused. The data I have is

the mass of the sky diver
gravity of earth
drag coefficient of sky diver

Terminal velocity occurs when the drag is equal and opposite the weight.
The mass and 'gravity' is needed to calculate the weight.
This equals the drag coefficient times the terminal velocity.
Have you learnt the drag equation and do you know the time?
No i haven't learnt it and I do have the time but I've got data for an entire minute of the sky diver falling like I have data for every second , I don't know what to do please help
5. (Original post by EricPiphany)
Terminal velocity occurs when the drag is equal and opposite the weight.
The mass and 'gravity' is needed to calculate the weight.
I have calculated the weight what do i do next ?
6. (Original post by EricPiphany)
Terminal velocity occurs when the drag is equal and opposite the weight.
The mass and 'gravity' is needed to calculate the weight.
This equals the drag coefficient times the terminal velocity.
(Original post by Cinna21)
I have calculated the weight what do i do next ?
..

Or squared, or however the formula is supposed to be.
7. (Original post by EricPiphany)
..

Or squared, or however the formula is supposed to be.
I'm still confused ?
8. drag = mass*g?
9. (Original post by Cinna21)
I'm still confused ?
Were you given a formula to calculate the drag given the velocity and drag coefficient?
Equate it to the weight and solve for the velocity.
10. (Original post by Ishea16)
drag = mass*g?
11. (Original post by EricPiphany)
it was fine
12. (Original post by EricPiphany)
Were you given a formula to calculate the drag given the velocity and drag coefficient?
Equate it to the weight and solve for the velocity.
I was not given a formula, but I do have the drag coefficient, sorry If my questions are stupid, its just I haven't been taught this and I don't understand the textbook and I'm lost xD , If i don't have a formula what do I do ??
13. (Original post by Cinna21)
I was not given a formula, but I do have the drag coefficient, sorry If my questions are stupid, its just I haven't been taught this and I don't understand the textbook and I'm lost xD , If i don't have a formula what do I do ??
STEP 1: Check your textbook for a formula.
If not successful, proceed to step 2.
STEP 2: Assume drag is equal to drag coefficient times velocity.
(l don't know how trustworthy l am for step 2, but I think it's a fair assumption in this case).
14. (Original post by Ishea16)
it was fine
Cool, mine was kind of OK too

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