Making sence of this equation?

  • Thread starter atypical
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In summary, the conversation is discussing an equation involving velocity, initial velocity, and height. One person is asking for clarification on the components of the equation, specifically the square root of gd/2 and where it is coming from. The other person provides a correction to the equation and acknowledges their mistake. They then explain that the square root of gd/2 represents a maximum velocity, and there is a relationship between vi sintheta and the square root of gd/2.
  • #1
atypical
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Homework Statement


See picture please

Homework Equations


The Attempt at a Solution


Here is what I understand:
vi sin(theta) = initial velocity height on velocity/time graph
What I don't understand:
sqrt(gd/2) is this gravity times initial distance height of target?
Where is the second side of the equation is coming from?
 

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  • #2
[tex]\sqrt{\frac{gd}{2}}[/tex]= some velocity that is less than or equal to vsintheta which is another velocity. So when d is at the maximum height both sides should equal each other
 
  • #3
ok, i understand that it is a velocity, but where is it coming from? why is is the square root of gd/2?
 
  • #4
i re read your problem and I'm sorry i gave the wrong advice.

umm vf2 = vi2+2ad

not sure where the 1/2 came from. sorry its late
 
  • #5
So from the equation that you posted, they are deriving vi sintheta is greater than or equal to sqart (gd/2)?
 
  • #6
ok, i understand that it is a velocity, but where is the square root of gd/2 coming from? anyone?
 

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The purpose of making sense of an equation is to understand the relationships between different variables and how they affect each other. This can help us solve problems and make predictions based on the information provided by the equation.

2. How do I know if I have solved the equation correctly?

You can check if you have solved the equation correctly by plugging in your solution back into the equation and seeing if it satisfies all the conditions. You can also use a calculator or computer program to verify your solution.

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If you are struggling with understanding or solving an equation, it can be helpful to break it down into smaller parts and try to understand each component individually. You can also seek help from a teacher, tutor, or peers who may have a better understanding of the equation. Practice and persistence are key in making sense of equations.

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