What are the missing letters in the pattern? kr, np, , tl , wj,

What could explain what happened when the time was equal to 120 minutes

The quadratic function h(t)=-16.1t^2+150 choose the graph representation

Abird on top of a 200 ft bridge tower sees a man standing on the lower part of the bridge (which is 50 ft above the ground). the angle of depression from the bird is 26 ̊. how far is the man from the base of the bridge tower? with explanation and pictures .