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Hey, this is my first time posting here, I just found this site in a Google search.

I've been doing a projectile motion question, and I know what I am doing and solving for and such, but I am having great difficulties re-arranging the equation I need. The equation looks like so:

[tex]\Delta[/tex]d[tex]_{}y[/tex] = v[tex]_{2y}[/tex][tex]\Delta[/tex]t + [tex]\frac{1}{2}[/tex]g[tex]\Delta[/tex]t[tex]^{2}[/tex]

The variable I need to solve for is time ([tex]\Delta[/tex]t), but I'm having vast difficulties in doing so. I know I've solved this before, but am not entirely sure how I did it. If this makes no sense, I will post the whole question so I can be told what I'm doing wrong.

Thanks in advance for the help, I would really appreciate it!

EDIT: I think I'm doing this posting thing all wrong...sorry for my noob-ness.

Ninjaedit: the speed shouldn't be squared, it should be v2 (as in second) y...subscript doesn't work for me properly apparently

EDIT AGAIN: Okay, so in reading around a little bit more, I noticed I should list what I went through to try to rearrange this equation.

1. [tex]\Delta[/tex]d[tex]_{}y[/tex] - v[tex]_{2y}[/tex][tex]\Delta[/tex]t = [tex]\frac{1}{2}[/tex]g[tex]\Delta[/tex]t[tex]^{2}[/tex]

2. [tex]\frac{[tex]\Delta[/tex]d[tex]_{}y[/tex] - v[tex]_{2y}[/tex][tex]\Delta[/tex]t}{0.5g}[/tex] = [tex]\Delta[/tex]t[tex]^{2}[/tex]

And that's where I got stumped. How would I isolate this variable? Is it do-able?

I've been doing a projectile motion question, and I know what I am doing and solving for and such, but I am having great difficulties re-arranging the equation I need. The equation looks like so:

[tex]\Delta[/tex]d[tex]_{}y[/tex] = v[tex]_{2y}[/tex][tex]\Delta[/tex]t + [tex]\frac{1}{2}[/tex]g[tex]\Delta[/tex]t[tex]^{2}[/tex]

The variable I need to solve for is time ([tex]\Delta[/tex]t), but I'm having vast difficulties in doing so. I know I've solved this before, but am not entirely sure how I did it. If this makes no sense, I will post the whole question so I can be told what I'm doing wrong.

Thanks in advance for the help, I would really appreciate it!

EDIT: I think I'm doing this posting thing all wrong...sorry for my noob-ness.

Ninjaedit: the speed shouldn't be squared, it should be v2 (as in second) y...subscript doesn't work for me properly apparently

EDIT AGAIN: Okay, so in reading around a little bit more, I noticed I should list what I went through to try to rearrange this equation.

1. [tex]\Delta[/tex]d[tex]_{}y[/tex] - v[tex]_{2y}[/tex][tex]\Delta[/tex]t = [tex]\frac{1}{2}[/tex]g[tex]\Delta[/tex]t[tex]^{2}[/tex]

2. [tex]\frac{[tex]\Delta[/tex]d[tex]_{}y[/tex] - v[tex]_{2y}[/tex][tex]\Delta[/tex]t}{0.5g}[/tex] = [tex]\Delta[/tex]t[tex]^{2}[/tex]

And that's where I got stumped. How would I isolate this variable? Is it do-able?

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