Question

Nerve impulses in a human body travel at a speed of about 100 m/s. Suppose a person accidentally steps barefoot on a pebble. About how much time does it take the nerve impulse to travel from the foot to the brain (in s)? Assume the person is 1.90 m tall and the nerve impulse travels at uniform speed.

Answer 1

The time required by the impulse to travel from foot to brain equals 0.019 seconds

Step-by-step explanation:

For uniform motion the distance, speed, time are related by the equation

`Distance=Speed* time`

In our case since the person is 1.90 meters tall so the nerve impulse will have to cover a distance of 1.90 meters at a speed of 100 m/s.

Hence the time required for the impulse to travel from foot to the brain can be calculated as

`time=(Distance)/(speed)\\\\\therefore time=(1.90m)/(100m/s)=0.019seconds`