Agiven flow field is defined by streamwise velocity component u = (8x) ft/s and cross-stream velocity component v = (8y) ft/s, where x and y are in feet. calculate the acceleration of a particle located at (x, y) = (2 ft, 1 ft) in this flow field, and state whether the flow is steady or unsteady. (hint: use the material derivative.)

An astronaut on the moon throws a baseball upward. the astronaut is 6 ft, 6 in. tall, and the initial velocity of the ball is 3030 ft per sec. the height s of the ball in feet is given by the equation s equals negative 2.7 t squared plus 30 t plus 6.5s=−2.7t2+30t+6.5, where t is the number of seconds after the ball was thrown. complete parts a and b.