Growth and decay question (1 Viewer)

[Thylacine]

The velocity of a particle is given by v=100 + 280e^-kt ms^-1 . If the velocity decreases by 20% after 50 seconds , find the % decrease in velocity after 3 minutes.

 

[anomalousdecay]

At t=0 sec, v=380 m/s. Now:



Find k. Then substitute 180 seconds and k to find v.

Find the % decrease.