Pls answer the problem.

Dear Student,

Ball will have same velocity as that of balloon.using,s=ut+12at215=-10t+12×10t2t2-2t-3=0(t-3)(t+1)=0t=3 sec            [t can not be -1(negative value for time)]ball reaches ground in 3 sec.Average velocity =displacementtime=153=5m/s
We need not to calculate for option 2

Option 3 is not suitable.


Regards,

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