Question

the speed of a nerve impulse in the human body is about 100 m/s. If you accidentally stub your toe in the dark, estimate the time it takes the nerve impulse to travel to your brain. . translation please? lol

Answer 1

Say you were 100 meters tall. In that case, the nerve impulse would reach your brain in about 1 second, since it goes 100 meters per second. You're a little less than 50 times shorter, so the nerve impulse must take a little less than 1/50th of a second. 

In fact, distance traveled = speed of travel * time it takes. Thus, 
time = distance/speed 
==> time = 1.7m/(100m/s) 
==> time ~ 0.017 seconds, or about 17 milliseconds.


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