Recall That the Flight of a Projectile Can Be Modeled

Short Answer

Recall that the flight of a projectile can be modeled with the parametric equations:
, where t is in seconds, ν_o is the initial velocity, θ is the angle with the horizontal, and x and y are in feet.
A projectile is launched at a speed of 560 ft/sec at an angle of 47° with the horizontal. After how many seconds does the projectile hit the ground? Round to one decimal place.