In a collision, a force acts upon an object for a given amount of time to change the object's velocity. The product of force and time is known as impulse. The product of mass â¦ and velocity change is known as momentum change. In a collision the impulse encountered by an object is equal to the momentum change it experiences.Impulse = Momentum Change.
In addition to the locus coeruleus existing as a source of the neurotransmitter norepinephrine within the central nervous system, the adrenal gland can also release norepinephrine during a stress response into the bodyâs blood stream, at which point norepinephrine acts as a hormone in the endocrine system.
The negative effects of stress. When you perceive a crisisâ-or think a stressful thoughtâ-your brain secretes corticotrophin-releasing hormone (CRH). This master stress hormone triggers the release of glucocorticoid stress hormones, such as cortisol. Stimulated by glucocorticoids and other stress hormones (like adrenaline), the brain and body shift into crisis mode. Your breathing and pulse quicken, making more oxygen available to your muscles.