Question
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, was ( g =9.8 ~ms ^ -2 )
BITSAT
Physics
Motion In One Dimension
2021
BITSAT 2021
BITSAT Physics Question (2021) — Solution
Options
- A. 100 ~m
- B. 200 ~m
- C. 400 ~m
- D. 150 ~m
Answer
B. 200 ~m
Step-by-step solution
For stone to be dropped from rising balloon of velocity 29 ~m / s , u =-29 ~m / s , t =10 sec . array l h =-29 10+ 1 2 9.8 100 \\ =-290+490=200 ~m . array
Related: Physics — Motion In One Dimension · All PYQ Banks