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Old Dec 8th 2018, 03:10 PM   #1
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Forces in vectors Calculation

Hi please refer to the image for the question.
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Forces in vectors Calculation-screen-shot-2018-12-08-5.00.20-pm.png  
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Old Dec 10th 2018, 07:23 AM   #2
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Originally Posted by KyleFresh View Post
Hi please refer to the image for the question.
So... what do you think?

Do you know what the difference is between $\displaystyle v$, $\displaystyle v_x$ and $\displaystyle v_y$?
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Old Yesterday, 01:54 PM   #3
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Originally Posted by benit13 View Post
So... what do you think?

Do you know what the difference is between $\displaystyle v$, $\displaystyle v_x$ and $\displaystyle v_y$?
I got Fnetx= vcosθ - cv^2cosθ
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Old Today, 03:00 AM   #4
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Originally Posted by KyleFresh View Post
I got Fnetx= vcosθ - cv^2cosθ
Okay... but do you know what the difference is between $\displaystyle v$, $\displaystyle v_x$ and $\displaystyle v_y$? It's important because once you know that, you're find the question a lot easier.
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Old Today, 03:53 AM   #5
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There is a standard maths technique for separating a vector into separate components, acting in different directions.
(2 components for a 2D vector, 3 for a 3D vector, etc.)
By convention these components are at 90 degrees with respect to each other.
(It is possible to define and use components that are not at 90 degrees, but that is another story).

There are standard mathematical rules for what happens to each component of a vector when a mathematical operation is applied to the main vector.

If you are familiar with those rules, then the answer is obvious.
If you are not familiar with those rules, seek additional guidance from your tutor.

The whole point of your tutor giving you these questions is to identify any holes in your understanding,
and if they are a good tutor they will then try to fix those holes.
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