1. The problem statement, all variables and given/known data A projectile is launched at a 45 degree angle 1.2m off the ground. Its horizontal displacement is 25.58m. Assuming no wind resistance or friction or anything like that, how long did the launch take? horizontal: ΔDx=25.58m Vertical: ΔDy=1.2m a=9.8m/s^2 θ, or Angle = 45 degrees 2. Relevant equations I'm not sure so I'll just list a bunch I think could be relevant. Standard BIG 4 equations. V=D/T a=(Vf-Vi)/t d=([Vf+Vi]/2)t The quadratic formula. 3. The attempt at a solution I don't even know where to begin to be honest, I don't know any speed/velocity.