A spacecraft moves along a path described by the parametric equations x=10( 1+t 41) , y =40 t 3 2 for the first 100 sec after launch. Here, x and y are measured in meters, and t is measured in seconds. Find the magnitude and direction of both the velocity and the resultant acceleration of the spacecraft 12 seconds after launch. Round answers to one decimal place. Show all the steps and explain steps as you go