An object is moving along the x -axis. at t = 0 it is at x = 0. its x -component of velocity vx as a function of time is given by vx(t)=αt−βt3 , where α= 6.8 m/s2 and β= 4.8 m/s4 .
a) At what nonzero time tt is the object again at xx = 0?
b), what is the xx-component of the velocity of the object?
c) At the time calculated in part (a), what is the xx-component of the acceleration of the object?