An archerfish, peering from just below the water surface, sees a grasshopper standing on a treebranch that’s just above the water. Thearcherfishspits a drop of waterat the grasshopperand knocks it into the water. The grasshopper’s initialposition is 0. 45 m above the water surfaceand 0. 25 m horizontally away from the fish’s mouth. The launch angle of the drop is 63owithrespect to the water surface.