A balloon rising up with an acceleration of 25m/s2. A body is dropped from the balloon when its upwards velocity is 300 m/s. What are the values of velocity a

Question

Please help me solve it. I am not able to comprehend it and know how to solve it.

Answer 1

The velocity of the balloon is v=300 m/s.  g=-9.8m/s^2 for the body

 

Use Newton's equation of motion for the balloon as it rises, v²=u²+2ah

 

--> 90000 = 0 + 2(25)(h)

 

--> h=1800

 

now the body, h=ut + (1/2)at² where h is the displacement and a=acceleration of the body=g

 

--> -1800 = 300t - (1/2)(9.8)t²

 

--> t = 66.7 s