To Train for the Running of a Triathlon, Jerri Jogs

question 249

Short Answer

To train for the running of a triathlon, Jerri jogs 1 hour each day over the same 9-mile course. Five miles of the course is downhill, whereas the other 4 miles is on level ground. Jerri figures that she runs 2 miles per hour faster downhill than she runs on level ground. Find the rate at which Jerri runs on level ground. __________ miles per hour

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Definitions:

Voluntary Muscles

Muscles that are under conscious control, used in actions such as speaking, walking, and grabbing objects.

SCN

Stands for the Suprachiasmatic Nucleus, a small region in the brain that regulates the circadian rhythms, including sleep-wake cycles.

Pineal Gland

A small endocrine gland in the vertebrate brain that produces the hormone melatonin, involved in regulating sleep patterns.

Melatonin

A hormone produced by the pineal gland that regulates sleep and wakefulness cycles.