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.
Stress causes a hormonal release of catecholamines and steroids. It is a fight or flight response to a stimulus. Long-term stress can affect the immune system, can increase blood pressure, and can increase the likelihood of stroke and heart attack. Immediate stress causes immediate reactions, while chronic stress can cause more prolonged and chronic changes.