<p>my teacher wanted us to memorize these 3 formulas:
1. Vf = Vi + at
2. Vf^2 = Vi^2 + 2as
3. S = 1/2at^2 + Vi(t)</p>
<p>the only problem is he didn't tell us what each formula is called or for and i can't find them in our book.
so if can you could tell me what each formula is (called) and used to find?!? thank you.</p>
<p>Um yea I have my notes right in front of me for how you derive all of those formulas but it would take too long to type out. All I can tell you is that those are for problems dealing with constant acceleration. Post imyour question in the official physics thread and maybe Simone will have a better answer for you there</p>
<p>Vf refers to final velocity. Vi is initial velocity. It is sometimes referred to as Vo. The unit for velocity is displacement over time. In SI it is meters/seconds. a is acceleration. A is velocity/time, so in SI it’s meters/seconds/seconds, or meters/seconds^2. T is time. S looks like displacement.</p>
<p>All of these are kinematic equations which deal with motion in one dimension. If you’ve done chemistry, think of them kind of like gas laws; problems will usually give you all but one of the variables and you use the equations to find the other ones.</p>
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<p>Try looking in a chapter dealing with Motion/Kinematics in One Dimension.</p>
<p>If you need physics help, use the Physics Classroom website.</p>
<p>That site saved my hide in Physics I honors :). </p>
<p>Your equations are discussed here:</p>
<p>[The</a> Kinematic Equations](<a href=“The Physics Classroom Website”>Kinematic Equations)</p>