Hominids that appeared 230,000 years ago who hunted, made fire, and wore clothes neanderthals primates homo sapiens australopithecine

Aneuron is stimulated with an electric pulse. the action potential is detected at a point 3.70 cm down the axon 0.0052 s later. when the action potential is detected 7.20 cm from the point of stimulation, the time required is 0.0063 s. what is the speed of the electric pulse along the axon? (why are two measurements needed instead of only one? )

The location of the stomach is the diaprham

I’m stuck on this question cuz i’m stupid sksksksk