COMEDK · Physics · 3. Motion In One Dimension
A balloon is rising vertically up with a velocity of \(29 \mathrm{~ms}^{-1}\), A stone is dropped from it and it reaches the ground in \(10 \mathrm{~s}\). The height of the balloon when the stone was dropped from it is \(\left(g=9.8 \mathrm{~ms}^{-2}\right)\)
- A \(100 \mathrm{~m}\)
- B \(200 \mathrm{~m}\)
- C \(400 \mathrm{~m}\)
- D \(150 \mathrm{~m}\)
Answer & Solution
Correct Answer
(B) \(200 \mathrm{~m}\)
Step-by-step Solution
Detailed explanation
Civen, velocity of the balloon \(=29 \mathrm{~ms}^{-1}\) When the stone is dropped, then the velocity of the stone \[ u=29 \mathrm{~ms}^{-1} \] Time taken to reach the ground, \(t=10 \mathrm{~s}\) From the second equation of motion,…
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