A balloon is rising vertically up with a velocity of $29 \,ms^{-1}$. A stone is dropped from it and it reaches the ground in $10$ seconds. The height of the balloon when the stone was dropped from it is...........$m$ ($g = 9.8\,m/{s^2}$)
A balloon is rising vertically up with a velocity of $29 \,ms^{-1}$. A stone is dropped from it and it reaches the ground in $10$ seconds. The height of the balloon when the stone was dropped from it is...........$m$ ($g = 9.8\,m/{s^2}$)
$100$
$200$
$400$
$150$
A balloon is rising vertically up with a velocity of $29 \,ms^{-1}$. A stone is dropped from it and it reaches the ground in $10$ seconds. The height of the balloon when the stone was dropped from it is...........$m$ ($g = 9.8\,m/{s^2}$)
For stone to be dropped from rising balloon of velocity $29 \,m/s$.
$u = - \;29\;m/s,$ $t = 10 \,sec$.
$\therefore h = - \;29 \times 10 + \frac{1}{2} \times 9.8 \times 100$
$= -290 + 490 = 200 \,m$.
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