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July 2, 2015

Homework Help: Physics

Posted by Leah on Tuesday, September 15, 2009 at 4:14am.

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 2.45 m/s at an angle of 53.0 degrees above the horizontal, and aims for a beetle on a leaf 4.00 cm above the water's surface.

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


How much time will the beetle have to react?

I tried t=2.45sin(53)/9.81 and x=2.45cosine(53)*t but they both gave me wrong answers? What exactly do I need to do?

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