Home
Class 12
PHYSICS
A ball is thrown vertically downwards fr...

A ball is thrown vertically downwards from a height of 20m with an intial velocity `v_(0)`. It collides with the ground, loses 50% of its energy in collision and rebounds to the same height. The intial velocity `v_(0)` is (Take, g =10 `ms^(-2)`)

A

20 `ms^(-1)`

B

28 `ms^(-1)`

C

10 `ms^(-1)`

D

14 `ms^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NEET MOCK TEST 15

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

  • NEET MOCK TEST 17

    NTA MOCK TESTS|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A ball falls under gravity from a height of 10 m with an initial downward velocity u. It collides with the ground, losses 50% of its energy in collision and then rises back to the same height. The initial velocity u is

A ball falls undal gravity from a height of 10m with an initial downward velocity u. It collides with ground, loses halft its energy and then rises back to the same height. Find the initial velocity u.

A ball falls under gravity from a hight of 10 m height of 10 m wioth an initial downward velocity u .If collides with the gound , loses 50% of its energy in collision and then rises back back to the same heighrt .Find the initial velocity u.

A ball is projected vertically down with an initial velocity from a height of 20 m onto a horizontal floor. During the impact it loses 50% of its energy and rebounds to the same height. The initial velocity of its projection is

A ball is thrown vertically upwards from the top of tower of height h with velocity v . The ball strikes the ground after time.

A ball is thrown vertically down from height of 40 m from the ground with an initial velocity 'v'. The ball hits the ground, loses (1)/(3)rt of its total mechanical energy and rebounds back to the same height. If the acceleration due to gravity is 10 "ms"^(-2) , the value of 'v' is

A ball is falling freely from a certain height. When it reached 10 m height from the ground its velocity is v_(0) . It collides with the horizontal ground and loses 50 % of its energy and rises back to height of 10 m . The value of velocity v_(0) is

A ball is thrown vertically downwards with velocity sqrt(2gh) from a height h. After colliding with the ground it just reaches the starting point. Coefficient of restitution is :

NTA MOCK TESTS-NEET MOCK TEST 16-PHYSICS
  1. A particles of mass m is fixed to one end of a light spring of force c...

    Text Solution

    |

  2. A heavy uniform chain lies on a horizontal table-top. If the coefficie...

    Text Solution

    |

  3. A, B, C and D are four different physical quantities having different ...

    Text Solution

    |

  4. A canon shell fired breaks into two equal parts at its highest point. ...

    Text Solution

    |

  5. A siren emitting a sound of frequency 800 Hz moves away from an observ...

    Text Solution

    |

  6. Ground state energy of H-atom is -13.6 eV. The energy needed to ionise...

    Text Solution

    |

  7. A wheel is subjected to uniform angular acceleration about its axis. I...

    Text Solution

    |

  8. The tension in a wire is decreased by 19% The percentage decrease in...

    Text Solution

    |

  9. In a Young's double slit experiment, 12 fringes are observed to be for...

    Text Solution

    |

  10. From an inclined palne two particles P,Q are projected with same speed...

    Text Solution

    |

  11. A ball is thrown vertically downwards from a height of 20m with an int...

    Text Solution

    |

  12. Two men with weights in the ratio 4:3 run up a staircase in time in th...

    Text Solution

    |

  13. The radius vector and linear momentum are respectively given by vector...

    Text Solution

    |

  14. The magnetic field on the axis at a distance z from the centre of the ...

    Text Solution

    |

  15. The time period of a simple pendulum measured inside a stationary lift...

    Text Solution

    |

  16. The diameter of the lens of a telescope is 0.61 m and the wavelength o...

    Text Solution

    |

  17. A vessel contains oil (density 0.9" g "c c^(-1)) over mercury (density...

    Text Solution

    |

  18. A refrigerator absorbs 2000 cal of heat from ice trays. If the coeffic...

    Text Solution

    |

  19. For c=2a and c lt b lt c, the magnetic field at the point P will be ze...

    Text Solution

    |

  20. A spherically symmetric gravitational system of particles has a mass d...

    Text Solution

    |