A projectile is fired from flat, level ground with an unknown initial velocity. The projectile reaches a maximum height of 20 meters and lands a horizontal distance of 45 meters from where it was launched. Find the time of flight for the projectile.
Find the x component of the initial velocity.
Find the initial speed of a projectile.
Find the angle at which the projectile was launched.

Could someone me find the answer to this problem.

Based on the concept of the wave-like nature of light, huygens' theory of light postulates that the more light was "bent" by a substance the slower it would move while traversing across that substance. a) deflection b) interference c) refraction d) resonance

It is reasonable to assume that the bulk modulus of blood is about the same as that of water (2.2 gpa). as one goes deeper and deeper in the ocean, the pressure increases by 10000 pa for every meter below the surface. if a diver goes down 80.0 m in the ocean, by how much does each cubic centimeter of her blood change in volume? give the answer in cubic centimeters (actually one cubic centimeter equals one milliliter).