l. A particle has such a curvilinear motion that its x-coordinate is defined by x: 5t3 - lSt where x is in inches and t in seconds. When t = 2 sec., the total acceleration is 3'5 inr'secz. If the ycornponent of acceleration is constant and the particle starts from rest at the origin when t = 0. Determine {a} the y-component of the acceleration when t = 2 sec., {to} the vertical component of the velocity when t = 4 sec_, and (c) the total velocity when t = 4 sec