Home
Class 9
PHYSICS
A ball is dropped from a balloon which i...

A ball is dropped from a balloon which is rising up with a speed of 2 m/s. After 2 s the velocity of the packet is

A

20 m/s

B

18 m/s

C

22 m/s

D

none

Text Solution

Verified by Experts

The correct Answer is:
B

`v = u + at`
`implies v = 2 - 10 xx 2`
`= -18 m//s`
Promotional Banner

Topper's Solved these Questions

  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise CONSOLIDATED EXERCISE (MULTIPLE-CHOICE QUESTIONS WITH ONE OR MORE THAN ONE CORRECT ANSWER)|6 Videos
  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise CHALLENGING EXERCISE|6 Videos
  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise CONSOLIDATED EXERCISE (MATCH THE COLUMNS)|3 Videos
  • ELASTICITY

    CENGAGE PHYSICS|Exercise OLYMPIAD AND NTSE LEVEL EXERCISES|10 Videos

Similar Questions

Explore conceptually related problems

A packet is dropped from a balloon which is going upwards with the velocity 12m//s . The velocity of the packet after 2 seconds will be

A ball is dropped from a ballon going up at a speed of 7 m/s. If the balloon was at a height 60 m at the time of dropping the ball, how long will the ball take in reaching the ground?

A packet is dropped from a helicopter rising up with velocity 2 ms^(-1) . The velocity of the packet after 2 seconds will be

A stone is dropped from a balloon rising upwards with a velocity of 16 ms^(-1) . The stone reaches the ground in 4 s. Calculate the height of the balloon when the stone was dropped.

A body is dropped from a balloon moving up with a velocity of 4 m//s , when the balloon is at a height of 120 m from the ground. The height of the body after 5 s from the ground is:

A body is dropped from a balloon moving up wigh a velocity of 4 m s^(-2) when the balloon is at a height of 12.5 m from the ground. The height of the body after 5 s from the groumd is (g=9.8 ms^(-2)) .

A man in a balloon throws a stone downwards with a speed of 5 m//s with respect to balloon. The balloon is moving upwards with a constant acceleration of 5 m//s^2 . Then velocity of the stone relative to the man after 2 seconds is.

A packet is released from a balloon which is moving upward when the balloon is at a height 200 m above ground. The packet reaches the ground in 8 sec. Speed of the balloon when the packet is released, is: (Take g = 10 m//s^(2) )

CENGAGE PHYSICS-DESCRIPTION OF MOTION-CONSOLIDATED EXERCISE (MULTIPLE-CHOICE QUESTIONS WITH ONE CORRECT ANSWER)
  1. A stone when thrown with a velocity of 5 m/s attains a maximum height ...

    Text Solution

    |

  2. An ant moves along a circular track of 6 m radius such that the arc of...

    Text Solution

    |

  3. A ball is dropped from a balloon which is rising up with a speed of 2 ...

    Text Solution

    |

  4. If a car travels 30 m and 26 m in its 7^(th) and 6th second of its tra...

    Text Solution

    |

  5. If a ball is thrown upward with a velocity of 6 m/s. The maximum heigh...

    Text Solution

    |

  6. If a body is thrown in air with an angle with horizontal. Then the pat...

    Text Solution

    |

  7. A ball is thrown vertically upward in air. When the particle is at a h...

    Text Solution

    |

  8. Which of the graph shows that the particle is at rest .

    Text Solution

    |

  9. A particle travels half of the circle of radius r. Then the displaceme...

    Text Solution

    |

  10. A ball is dropped from a certain height to fall under gravity. After 1...

    Text Solution

    |

  11. The ratio of maximum height reached by two bodies projected vertically...

    Text Solution

    |

  12. Two trains 1000 m long are moving parallel to each other at a speed of...

    Text Solution

    |

  13. A car travels the first 1//3^(rd) distance at a speed of 30 km/h, the ...

    Text Solution

    |

  14. A bus starts moving with an acceleration 2 m//s^2. A cyclist 96 m behi...

    Text Solution

    |

  15. The velocity of car changes from 40 m/s to 10 m/s in 10 s. The acceler...

    Text Solution

    |

  16. Which of the graph shows a particle with retardation?

    Text Solution

    |

  17. Speed of two identical cars are u and 4u at the instant. The ratio of ...

    Text Solution

    |

  18. A ball is released from the top of a tower to height h. It takes T sec...

    Text Solution

    |

  19. A car is standing 100 m behind a bus. The bus and the car both start m...

    Text Solution

    |

  20. Which of the following is correct about the given graph?

    Text Solution

    |