The location of a particle moving in the y-z plane is expressed by the following equations in the y and z directions: y=0.8-t+2-t z=-3-t +8-1 At t= 0.5 seconds: . What is the velocity in the y-direction? . What is the velocity in the z-direction? What is the acceleration in the y-direction? . What is the acceleration in the z-direction? . What is the magnitude of the velocity? . What is the angle of the velocity vector with respect to the y axis?