Answer:
So instantaneous velocity after 9 sec will be 88.2 m/sec
Explanation:
We have given time t = 9 sec
As the object is released from rest so its initial velocity u = 0 m/sec
We have to find its final velocity v
Acceleration due to gravity [tex]g=9.8m/sec^2[/tex]
From first equation of motion we know that [tex]v=u+gt[/tex]
[tex]v=0+9.8\times 9=88.2m/sec[/tex]
So instantaneous velocity after 9 sec will be 88.2 m/sec
