Recent content by Kennyh

what I got was ((xf-xi)-(1/2at^2)/t))+at = vf

Homework Statement Starting from the constant-acceleration kinematic equations, write a formula that gives vf in terms of t, xi, xf, and a. Homework Equations The Attempt at a Solution I tried using vf = vi + at but it was incorrect. Is there another way where i can solve for vf using the 4...

Hey do you go to UGA or use a website called loncapa?

I don't think so the computer is very easy on those if you a couple off the decimal it is fine. thanks for your help

It is not the book, it's an online homework

I found out t= 5.38s So I plug it in the equation: Xf = 52.7*5.38+(1/2)(-9.8)(5.38)^2 = 141.7 m Then 138+141.7 = 279.7m but it was not the right answer, am I doing this wrong?

Homework Statement A model rocket is launched straight upward with an initial speed of 46.7 m/s. It accelerates with a constant upward acceleration of 2.16 m/s2 until its engines stop at an altitude of 138 m. What is the maximum height reached by the rocket? How long after lift off does...