A skydiver has a mass of 75kg. At 80mph, the drag force on the skydiver is 650N.
Find the acceleration of the skydiver at 80mph (take g = 10N/Kg).
Any help and explanation would be great! I just can't get my head around it and I'm panicking so much.
Find the acceleration of the skydiver at 80mph (take g = 10N/Kg).
Any help and explanation would be great! I just can't get my head around it and I'm panicking so much.
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Hi there.
I just solved the problem, here you go: http://www.4freeimagehost.com/uploads/37…
There are a few tricky things I thought might be worth mentioning, if you're dealing with "drag force" problems, such as this one:
1- Always, before anything, write down whatever you're given, and after that, draw a nice free body diagram to know what forces you're dealing with.
2- Apply newton's second law (sum of the forces equals mas times acceleration) and solve for your unknown.
3- In this problem, the speed you're given is simply useless. We don't care at what speed the skydiver has reached the terminal velocity because of drag force. (In other words, we don't need that at all).
4- The reason why the final answer (acceleration) is negative is that the drag force is being exerted in the opposite direction of the motion.
I followed the same steps for the problem you posted; hope it was helpful.
Feel free to ask me any additional questions you might have.
Good Luck! :-)
I just solved the problem, here you go: http://www.4freeimagehost.com/uploads/37…
There are a few tricky things I thought might be worth mentioning, if you're dealing with "drag force" problems, such as this one:
1- Always, before anything, write down whatever you're given, and after that, draw a nice free body diagram to know what forces you're dealing with.
2- Apply newton's second law (sum of the forces equals mas times acceleration) and solve for your unknown.
3- In this problem, the speed you're given is simply useless. We don't care at what speed the skydiver has reached the terminal velocity because of drag force. (In other words, we don't need that at all).
4- The reason why the final answer (acceleration) is negative is that the drag force is being exerted in the opposite direction of the motion.
I followed the same steps for the problem you posted; hope it was helpful.
Feel free to ask me any additional questions you might have.
Good Luck! :-)
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F= MA
Force = Mass * Acceleration.
Manipulate it into A= F/M (just divide M by each side- simple algebra).
A= 650/ 75.
' = 8.666 = 8 2/3 = 26/ 3.
The unit is meters per seconds squared (m/s^2).
No need to fret, physics isn't as difficult as it seems.
Not sure how else to explain, besides the fact some concepts (i.e. force) are what scientists designed to work back-and-forth with certain situations.
G'luck.
Force = Mass * Acceleration.
Manipulate it into A= F/M (just divide M by each side- simple algebra).
A= 650/ 75.
' = 8.666 = 8 2/3 = 26/ 3.
The unit is meters per seconds squared (m/s^2).
No need to fret, physics isn't as difficult as it seems.
Not sure how else to explain, besides the fact some concepts (i.e. force) are what scientists designed to work back-and-forth with certain situations.
G'luck.
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A=f/m
650N/75kg=8.666666
Acceleration= 8.666m/s^2
650N/75kg=8.666666
Acceleration= 8.666m/s^2
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The 2nd answer is the one to go with. Seems like the 1st and 3rd didn't understand the problem description.