Question

nerve impulses in the human body travel at a speed of about 100 m/s. a 2.0 m tall man accidentally drops a hammer on his toe. how long does it take for the nerve impulse to travel from his toe to his brain?
s

Explanation:

Step1: Recall the formula for time

The formula relating speed ($v$), distance ($d$), and time ($t$) is $t = \frac{d}{v}$.

Step2: Identify given values

We know that the speed of the nerve impulse $v = 100\space m/s$ and the distance $d = 2.0\space m$ (the height of the man, as the nerve impulse travels from toe to brain, approximately the height).

Step3: Calculate the time

Substitute the values into the formula: $t=\frac{2.0\space m}{100\space m/s}$.
Simplifying this, we get $t = 0.02\space s$.

Answer:

$0.02$