Derivatives

[kperovic]

A shark, looking for dinner, is swimming parallel to a straight beach and 90 feet offshore. The shark is swimming at the constant speed of 30 feet per second. At time t=0, the shark is directly opposite a lifeguard station. How fast is the shark moving away from the lifeguard station when the distance between them is 150 feet?

 

[chivox]

Shark traveling away from a lifeguard station

Hi. I assume because you didn't show any work that you are having trouble getting started. The first step would be to draw a picture and graphically state what you're trying to find. Then someone here, I'm sure, can help set up the equations, if it doesn't occur to you by that time. Please show your work, and read the note called "Read Before Posting" in all the folders. Let us know how it's coming, and you will find us very happy to help.