Home
Class 9
PHYSICS
An object of mass m is moving with a con...

An object of mass m is moving with a constant velocity `upsilon` How much work should be done on the object in order to bring the object to rest ?

Text Solution

AI Generated Solution

To solve the problem of how much work should be done on an object of mass \( m \) moving with a constant velocity \( \upsilon \) to bring it to rest, we can follow these steps: ### Step 1: Understand the concept of work and energy Work done on an object is equal to the change in its kinetic energy. If we want to bring the object to rest, we need to reduce its kinetic energy to zero. ### Step 2: Calculate the initial kinetic energy The kinetic energy (\( KE \)) of an object moving with velocity \( \upsilon \) is given by the formula: \[ ...
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

An object of mass 15kg is moving with a uniform velocity of 4m/s. what is the kinetic energy possessed by the object ?

An object of mass 2kg is sliding with a constant velocity of 4ms^(-1) on a frictionless horizontal table. The force required to keep the object moving with the same velocity is

The work done on an object does not depend on the :

Force can move an object at rest.

Work done by a force on an object is zero, if

An object is moving towards a convex mirror with a constant velocity. P is the pole of mirror.

Assertion : An object may fall with a constant velocity. Reason : This happens when acceleration of the object is equal to acceleration due to gravity.

An object of mass m moving with speed u collides one dimentionally with another identical object at rest. Find their velocities after collision, if coefficient of restitution of collision is e.

NCERT ENGLISH-WORK AND ENERGY-Exercise
  1. An electric heater is rated 1500W. How much energy does it use in 10 ...

    Text Solution

    |

  2. Illustrate the law of conservation of energy by discussing the energy ...

    Text Solution

    |

  3. An object of mass m is moving with a constant velocity upsilon How muc...

    Text Solution

    |

  4. calculate the work required to be done to stop a car of 1500 kg moving...

    Text Solution

    |

  5. In each of the following, a force, F is acting on an object of mass, m...

    Text Solution

    |

  6. Soni says that the acceleration in an object could be zero even when s...

    Text Solution

    |

  7. find the energy in kWh consumed in 10 hours by four devices of power 5...

    Text Solution

    |

  8. A freely falling object eventually stops on reaching the ground. What ...

    Text Solution

    |

  9. A force of 7N acts on an object. The displacement is, say 8m, in the d...

    Text Solution

    |

  10. When do we say that work is done ?

    Text Solution

    |

  11. Write an expression for the work done when a force is acting on an obj...

    Text Solution

    |

  12. Define 1 J of work.

    Text Solution

    |

  13. A pair of bullocks exerts a force of 140 N on a plough. The field bei...

    Text Solution

    |

  14. What is the kinetic energy of an object ?

    Text Solution

    |

  15. Write an expression for kinetic energy of an object.

    Text Solution

    |

  16. The kinetic energy of an object of mass m moving with a velocity of 5 ...

    Text Solution

    |

  17. What is power ?

    Text Solution

    |

  18. Define 1 W of power.

    Text Solution

    |

  19. A lamp consumes 1000 J of electrical energy is 10 s. What is its power...

    Text Solution

    |

  20. Define average power.

    Text Solution

    |