A balloon starts riding from ground from rest with an upward acceleration 2 m/s^2. Just after 1 s, a stone is dropped from it. The time taken be stone to strike the ground is nearly1) 0.3 s2) 0.7 s3) 1 s4) 1.4 sWhy we didnt used the value of acceleration as 2 m/s^2 or 2+10 to calculate s?

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Arun · Answer

for balloon, initial velocity of balloon=0 so,u=o a=2m/s 2 t=1s v=u+at v=2m/s (as u=0m/s ,a=2m/s 2 ,t=1s) s=ut+1/2at 2 s=1m (as u=0m/s ,a=2m/s 2 ,t=1s) for stone, u=-2m/s ,s=1m,a=9.8m/s 2 at 2 +2ut-2s=0 9.8t 2 -4t-2=0 t=.7s

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A balloon starts riding from ground from rest with an upward acceleration 2 m/s^2. Just after 1 s, a stone is dropped from it. The time taken be stone to strike the ground is nearly1) 0.3 s2) 0.7 s3) 1 s4) 1.4 sWhy we didnt used the value of acceleration as 2 m/s^2 or 2+10 to calculate s?

A balloon starts riding from ground from rest with an upward acceleration 2 m/s^2. Just after 1 s, a stone is dropped from it. The time taken be stone to strike the ground is nearly1) 0.3 s2) 0.7 s3) 1 s4) 1.4 sWhy we didnt used the value of acceleration as 2 m/s^2 or 2+10 to calculate s?

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A balloon starts riding from ground from rest with an upward acceleration 2 m/s^2. Just after 1 s, a stone is dropped from it. The time taken be stone to strike the ground is nearly1) 0.3 s2) 0.7 s3) 1 s4) 1.4 sWhy we didnt used the value of acceleration as 2 m/s^2 or 2+10 to calculate s?

A balloon starts riding from ground from rest with an upward acceleration 2 m/s^2. Just after 1 s, a stone is dropped from it. The time taken be stone to strike the ground is nearly1) 0.3 s2) 0.7 s3) 1 s4) 1.4 sWhy we didnt used the value of acceleration as 2 m/s^2 or 2+10 to calculate s?

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