1. The problem statement, all variables and given/known data An object moves along the x axis according to the position function x=At^2-Bt+C, where x is in meters and t in seconds; A,B, C are constants. Explain why or why not the equations v^2= vo^2+2a(x-xo) and v average= 1/2(v+vo) can be used to describe the motion of the object. Using mathematics is recommended 2. Relevant equations 3. The attempt at a solution So, the first one would be possible because it is describing a constant acceleration equation and since it is only a polynomial of degree 2 the acceleration would be constant. Also, you can find the velocity by taking the 1st derivative and the acceleration is the second derivative. The second equation is wrong because average velocity is displacement over change in time.