At time t=10s, the velocity of a particle moving in the x-y plane is v=+0.1i+2jm/s.By time t=10.1s, its velocity has become -0.1i+1.8jm/s.Determine the magnitude average acceleration of its average acceleration during this interval and the angle made by the accelaration with the posite x-axis... so what should I find first? thank you