After Exercising for a Few Minutes, a Person Has a Respiratory

question 157

Multiple Choice

After exercising for a few minutes, a person has a respiratory cycle for which the velocity of airflow is approximated by ​ ,
Where t is the time (in seconds) .
(Inhalation occurs when v > 0 and exhalation occurs when v < 0.)
​
Find the time for one full respiratory cycle.​
​

• A)6 sec
• B)2 sec
• C)7 sec
• D)3 sec
• E)8 sec