Home
Class 12
PHYSICS
A mouse jumps off from the 15^("th") flo...

A mouse jumps off from the `15^("th")` floor of a high-rise building and lands 12 m from the building. Assume that each floor is of 3m height. The horizontal speed with which the mouse jumps is closest to :

A

0

B

5 kmph

C

10 kmph

D

15 kmph

Text Solution

Verified by Experts

The correct Answer is:
D
Time of fall = `sqrt((2h)/g)=sqrt((2xx45)/10)`
t = 3 sec
horizontal distance = horizontal velocity `xx` time
`12=vxx3`
v = 4 m/s
=`4xx18/5` km/hr
v = 14.4 km/hr
`v~~15` km/hr
Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2013

    KVPY PREVIOUS YEAR|Exercise PART-II ( PHYSICS)|10 Videos

  • SOLVED PAPER 2018

    KVPY PREVIOUS YEAR|Exercise EXAMPLE|24 Videos

Similar Questions

Explore conceptually related problems

Rat jumps off from 15th floor of the building. Each floor is 3m high. Rat lands 12m from building. What is the horizontal speed with which rat jumped

A ball of mass 2 kg is projected horizontally with a velocity 20m/s from a building of height 15m. The speed with which body hits the ground is :

A marble is thrown horizontally with a speed of 15 m/s from the top of a building. When it strikes the ground, the marble has a velocity that makes an angle of 65^(@) with the horizontal. From what height above the ground was the marble thrown?

two tall building are situated 300 m apart . A ball is thrown horizontally from the window of 10^(th) floor of one building such that it lands in a windo of 3^(rd) floor of another nuilding. If the vertical distance between the corresponding floors of the building is 5m, find the velocity with which the ball must be thrown .

A body thrown horizontally from the top of a building with a speed 20 m//s , strikes the ground 40 m away from the foot of tower. The height of the tower is

A block is mass m is dropped from the fourth of an office building and hits the sidewalk below at speed v . From what floor should the block the dropped to double that impact speed?

A body is dropped from the roof of a multistoried building it passes the ceiling of the 15th storey at a speed of 20ms^(-1) if the height of each storey is 4m, the number of stereys in the building is (takeg=10ms^(-2) and neglect air resistance)

A body is dropped from the roof of a multi storied building. It passes the ceiling of the 15th storey at a speed of 20 ms^(-1) . If the height of each storey is 4m, the number of storeys in the building is (take g = 10ms^(-2) and neglect air resistance)

There are 20 steps to go to the first floor of a building from the ground floor . A child starts climbing up from the first step of the ground level . Mother starts coming down from the fourth step from the floor level of the first floor . If both have started at the same time with same speed, at which step would they meet counting from the first steps from the floor level of the first floor ?

A man runs across the roof-top of a tall building and jumps horizontally with hope of landing on the roof fo the bext building which is at a lower height than the first. If his speed is 9 m//s ,the (horizontal ) destanc hetween the two buildings is 10 m and height difference is 9 m , will he be able to land on the bext building ? (taken g=10 m//s^(2)).

KVPY PREVIOUS YEAR-QUESTION PAPER 2020-PART-I : PHYSICS
  1. A mouse jumps off from the 15^("th") floor of a high-rise building and...

    Text Solution

    |

  2. Consider two wires of same material having their ratio of radii to be ...

    Text Solution

    |

  3. A submarine has a window of area 30 xx 30 cm^(2) on its ceiling and is...

    Text Solution

    |

  4. A spacecraft which is moving with a speed u relative to the earth in t...

    Text Solution

    |

  5. The earth's magnetic field was flipped by 180^(@) a million years ago....

    Text Solution

    |

  6. The platelets are drifting with the blood flowing in a streamline flow...

    Text Solution

    |

  7. Which is the following colourful patterns is due to diffraction of lig...

    Text Solution

    |

  8. Two balls are projected with the same velocity but with different angl...

    Text Solution

    |

  9. Figure below shows a shampoo bottle in a perfect cylindrical shape ...

    Text Solution

    |

  10. At a height of 10 km above the surface of earth, the value of accelera...

    Text Solution

    |

  11. The following graph depicts the inverse of magnification versus the di...

    Text Solution

    |

  12. In a circus, a performer throws an apple towards a hoop held at 45 m h...

    Text Solution

    |

  13. A student was trying to construct the circuit shown in the figure belo...

    Text Solution

    |

  14. The ratio of gravitational force and electrostatic repulsive force bet...

    Text Solution

    |

  15. A monochromatic beam of light enters a square enclosure with mirrored ...

    Text Solution

    |

  16. A charge +q is situated at a distance 'd' away from both the sides of ...

    Text Solution

    |

  17. Three balls, A, B and C, are released and all reach the point X (shonw...

    Text Solution

    |

  18. Four bulbs, red, green, white and blue (denoted by R, G, W and B respe...

    Text Solution

    |

  19. A wide bottom cylindrical massless plastic container of height 9 cm ha...

    Text Solution

    |

  20. A small coin is fixed at the center of the base of an empty of cylindr...

    Text Solution

    |