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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.

Respuesta :

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  

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