Home
Class 12
PHYSICS
A balloon is at a height of 81 m and is...

A balloon is at a height of 81 m and is ascending upwards with a velocity of 12 m/s . A body of 2kg weight is dropped from it. If `g = 10 m//s^(2)`, the body will reach the surface of the earth in

A

1.5 sec

B

4. 025 sec

C

5.4 sec

D

6. 75 sec

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • ONE DIMENSION MOTION

    MOTION|Exercise EXERCSE -1 (Section - C : Relative Motion)|9 Videos

  • ONE DIMENSION MOTION

    MOTION|Exercise EXERCSE -1 (Section -D : Rain Problems, Aircraft wind problems)|6 Videos

  • ONE DIMENSION MOTION

    MOTION|Exercise EXERCSE -1 (Section - A : Distance, Displacement, Velocity and Acceleration, Equation of Motion )|26 Videos

  • NLM & FRICTION

    MOTION|Exercise EXERCISE-4 ( LEVEL-II)|15 Videos

  • OPTICS

    MOTION|Exercise Exercise|45 Videos

Similar Questions

Explore conceptually related problems

A balloon is at a height of 40 m and is ascending with a velocity of 10 ms^(-1) . A bag of 5 kg weight is dropped from it, when will the bag reach surface of earth ? (g = 10 m//s^(2))

A balloon is ringing up with constant velocity of 10 m/s. At a height of 75m a small mass is dropped from it. At what height from the ground would the balloon be when the mass reaches the ground?

The weight of a body of mass 3 kg at a height of 12.8 xx 10^(6) m from the surface of the Earth is ______.

A balloon was moving upwards with a uniform velocity of 10 m/s. An object of finite mass is dropped from the balloon when it was at a height of 75 m from the ground level. The height of the balloon from the ground when object strikes the ground was around : (takes the value of gas 10 m//s^2)

If a body is thrown up with the velocity of 15 m/s then maximum height attained by the body is (g = 10m//s)

A ballon is ascending with a constant velocity of 20 m/s. A particle is dropped from it when its height was 60m above the ground. Find if (g = 10 m//s^(2)) . The time of flight of particle

A balloon is going upwards with a constant velocity 15 m//s . When the ballooon is at 50 m height, a stone is dropped outside from the balloon. How long will stone take to reach at the ground? ("take " g=10 m//s^(2))

A body of mass 10 kg is dropped from a height of 20 m. (Take g = 10 m/s^2) Fuid its potential energy before it is dropped

A body of mass 10 kg is dropped from a height of 20 m. (Take g = 10 3/s^2) Its kinetic energy when it is 8 m abgve the ground