What is the instantaneous velocity of a freely falling object 9.0 s after it is released from a position of rest? express your answer to two significant figures and include the appropriate units.

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

From first equation of motion we know that

So instantaneous velocity after 9 sec will be 88.2 m/sec  

the answer is 12 as i may remember

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