Home
Class 11
PHYSICS
A cyclist free-wheels from the top of a ...

A cyclist free-wheels from the top of a hill, gathers speed going down the hill, applies the brakes and eventually comes to rest at the bottom of the hill. Which one of the following energy changes take place.

A

Potential to kinetic and to heat energy

B

Kinetic to potential and to heat energy

C

chemical to heat and to potential energy

D

Kinetic to heat and to chemical energy

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • WORK POWER AND ENERGY

    NARAYNA|Exercise Level- I (C.W)|60 Videos
  • WORK POWER AND ENERGY

    NARAYNA|Exercise Level- II (C.W)|68 Videos
  • WORK POWER AND ENERGY

    NARAYNA|Exercise Level-VI (Integer)|12 Videos
  • WORK , ENERGY & POWER

    NARAYNA|Exercise EXERCISE IV|43 Videos

Similar Questions

Explore conceptually related problems

A skier starts from the top of a hill with speed 5m//s and slides down the hill of vertical height 60 m as shown. Neglect friction. Find his speed at the bottom.

As one moves down the group from top to bottom then which of the following will not be observed?

A sphere and a cylinder have the same radius and the same mass. They start from rest at the top of an incline. Which reaches the bottom first? Which has the greater speed at the bottom? Which has the greater total kinetic energy of the bottom ? Which has the greater rotational KE ?

A trolley car starts from rest at the top of a hill as shown in figure -3.9 and moves down the curved track. Determine its speed as it reaches the bottom. Assume that the work done by frictional forces is negligible.

Illustrate the law of conservation of energy by discussing the energy changes which occur when we draw a pendulum bob to one side and allow it to oscillate. Why does the bob eventually come to rest ? What happens to its energy eventually ? Is it a violation of the law of conservation of energy ?\

A motorcycle, a car and a bus all have-the same kinetic energy. If equal braking forces are applied to them, they come to a halt after travelling x, y and z units of distance respectively. Which one of the following is correct ?

NARAYNA-WORK POWER AND ENERGY-C.U.Q-Key
  1. A shell is fired into ait at an angle theta with the horizontal form t...

    Text Solution

    |

  2. A cricket ball and a ping-pong ball are dropped. When they vacuum cham...

    Text Solution

    |

  3. A cyclist free-wheels from the top of a hill, gathers speed going down...

    Text Solution

    |

  4. If 'E' represents total mechanical energy of a system while 'U' repres...

    Text Solution

    |

  5. For a body thrown vertically upwards, its direction of motion changes ...

    Text Solution

    |

  6. Internal forces can change

    Text Solution

    |

  7. The negative of the work done by the conserative internal forces on a ...

    Text Solution

    |

  8. Which of the following statements is wrong ?

    Text Solution

    |

  9. When a body falls from an aeroplane there is increase in its :

    Text Solution

    |

  10. A body is moved along a straight line by a machine delivering constant...

    Text Solution

    |

  11. A particle is projected at t = 0 from a point on the ground with cert...

    Text Solution

    |

  12. A body starts from rest and acquires velocity V in time T. The instant...

    Text Solution

    |

  13. A car drives along a straight level frictionless road by an engine del...

    Text Solution

    |

  14. A particle is projeced with a velocity u making an angle theta with th...

    Text Solution

    |

  15. A motor car of m travels with a uniform speed v on a convex bridge of...

    Text Solution

    |

  16. A gramphone record is revolving with an angular velocity omega. A coin...

    Text Solution

    |

  17. A small sphere of mass 'm' is attached to a cord and rotates in a vert...

    Text Solution

    |

  18. A car is moving up with uniform speed along a fly over bridge which is...

    Text Solution

    |

  19. A bottle of soda water is rotated in a vertical circle with the neck h...

    Text Solution

    |

  20. A vehicle is moving with uniform speed along horizontal, concave and c...

    Text Solution

    |