The archerfish hunts by dislodging an unsuspecting insect from its resting place

Question

The archerfish hunts by dislodging an unsuspecting insect from its resting place with a stream of water expelled from the fish's mouth. Suppose the archerfish squirts water with a speed of 2.20m/s at an angle of 52.0 above the horizontal, and aims for a beetle on a leaf 3.50 cm above the water's surface. (Need help on Part B step by step please)

A) At what horizontal distance from the beetle should the archerfish fire if it is to hit its target in the least time?

answer: 2.91 cm

B) How much time will the beetle have to react?

answer must be t= ____ms (not sure if the ms stands for milliseconds)

Explanation / Answer

y=usin52-1/2gt2

here u=2.20m/sec

g=9.8m/sec2 y =3.5X10-2m calculating we will get the answer for time which is the answer for b

for a the corresponding x=horizontal distance=u cos 52 X t(which was calculated )

horizontal dis

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