A projectile (such as a baseball or a cannonball) launched from the origin with an initial horizontal velocity, uy, and an initial vertical velocity, v, moves in a parabolic 1 trajectory given by x=ugt, y = - 5912 +V,t, for t= 0, where air resistance is neglected and g ~ 9.8m/s? is the accelsration dus to gravity. Let ug =24 m/s and vy = 30 m/s. Complete parts (a) through (d) below. a. Assuming the projectile is launched over horizontal ground, at what time does it return to Earth? The projectile returns to Earth at t = [6.12| s. (Round to three decimal places as needed.)