The motion of a projectile is given by a(t) = 5 - 79 - 56- 34 - 9, where z and t are measured in miles and seconds respectively. Without converting units, find the following. dar The velocity u(t) - dt dax The acceleration de = a(t) Evaluate these at t = 3. u(3) (units go in the second box) a(3) (units go in the second box) Submit