# walking speed

• September 2nd 2010, 11:36 AM
bigwave
walking speed
This should be a very easy problem. but the way it is worded might confuse

The maximum walking speed $S$ (in feet per second) of an walking animal is given by the function $S = \sqrt{GT}$ where $G$ is $32$ feet per second squared and $L$ is the length of the animal's leg (in feet)

How fast can an animal whose legs are $9$ inches long walk?
Round off your answer to the nearest hundredth.

The answer to this is $12\sqrt{2}$ or $16.97$but don't see how this was derived
• September 2nd 2010, 12:45 PM
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Quote:

Originally Posted by bigwave
This should be a very easy problem. but the way it is worded might confuse

The maximum walking speed $S$ (in feet per second) of an walking animal is given by the function $S = \sqrt{GT}$ where $G$ is $32$ feet per second squared and $L$ is the length of the animal's leg (in feet)

How fast can an animal whose legs are $9$ inches long walk?
Round off your answer to the nearest hundredth.

The answer to this is $12\sqrt{2}$ or $16.97$but don't see how this was derived

16.97 is if the animal's legs are 9 feet long.

I get 4.90 as the correct answer.
• September 2nd 2010, 01:10 PM
bigwave
looks like a typo in the text book???
well not the first time

I dbl ckd it does say inches not feet