A cannon fires a projectile into the air at an angle of 60degrees above the horizontal. The projectile falls back on the ground at a distance d from the cannon and its maximum height is h. Ratio d/h is equal to:

Answer 1

d =vₒ²•sin2α/g = 2•vₒ²•sinα•cosα/g,
h= vₒ²• sin² α/2g.
d/h =4/g•tan α = 4/9.8•tan60º=0.24.