Upon spotting an insect on a twig overhanging water, an archer fish squirts water drops at the insect to knock it into the water (Figure). Although the fish sees the insect along a straight-line path at angle Ф and distance d, a drop must be launched at a different angle Ф0 if its parabolic path is to intersect the insect. If Ф = 36.0o, d = 0.900 m, and the launch speed is 3.56m/s, what Ф0 is required for the drop to be at the top of the parabolic path when it reaches the insect?

Transcribed Image Text:

Insect on twig Archer fish