Home
Class 9
PHYSICS
A car with K.E. 100 J is moving on a hor...

A car with K.E. 100 J is moving on a horizontal road. Now 200 J work is done on the car. The change in K.E. is

A

Zero

B

100 J

C

200 J

D

300 J

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    MODERN PUBLICATION|Exercise EXERCISE|191 Videos

  • SOUND

    MODERN PUBLICATION|Exercise EXERCISE|137 Videos

Similar Questions

Explore conceptually related problems

Calculate the work done by a car against gravity in moving along a straight horizontal road. The mass of the car is 400 kg and the distance moved is 2 m.

A bal of mass 1 g carrying a chage 10^-8 C moves from a point A at potential 600 V to a point B at zero potential. The change in its K.E. is

In a process , 701 j of heat is absorbed by a system and 394 j of work is done by the system. What is the change in internal energy for the proces ?

For driving current of 2A for 6 min in a circuit, 1,000 J of work is to be done. The e.m.f. of the source is

On moving a charge of 20 C by 2 cm, 2 J of work is done. Then, the potential difference between the points is

A car of mass 1000 kg moves on a circular road with a speed of 20 ms^-1 . Its direction changes by 90^@ after travelling 628 m on the road. The centripetal force acting on the car is

A rain drop of mass 1.00 g falling from a height of 1 km hits the ground with a speed of 50 ms^-1 . Calculate. the gain in K.E. of the drop.

MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. A body is falling from a height h. After it has fallen a height h/2, i...

    Text Solution

    |

  2. Two electrodes are maintaned at a potential difference of 100 V. An e...

    Text Solution

    |

  3. A car with K.E. 100 J is moving on a horizontal road. Now 200 J work i...

    Text Solution

    |

  4. Two bodies with kinetic energy in the ratio of 4:1 are moving with equ...

    Text Solution

    |

  5. A certain household has consumed 250 units of electric energy during a...

    Text Solution

    |

  6. If mass is doubled and velocity is halved then new kinetic energy is

    Text Solution

    |

  7. When the force retards the motion of the body, the work done is :

    Text Solution

    |

  8. In which of the following examples, work done is negative?

    Text Solution

    |

  9. In which of the following applications is work is not done?

    Text Solution

    |

  10. For a force to do maximum work, what should be the angle between force...

    Text Solution

    |

  11. State the SI unit of potential energy.

    Text Solution

    |

  12. What is the commercial unit of electical energy? Represent it in terms...

    Text Solution

    |

  13. A boy throws a rubber ball vertically upwards. What kind of work is do...

    Text Solution

    |

  14. A boy throws a rubber ball vertically upwards. What kind of work is do...

    Text Solution

    |

  15. A person holds a bundle of hay over his head for 30 minutes and gets t...

    Text Solution

    |

  16. Express kilowatt hour in terms of joules.

    Text Solution

    |

  17. Two children A and B each weigh 20 kg climb a rope up a height of 10 m...

    Text Solution

    |

  18. Two children A and B each weigh 20 kg climb a rope up a height of 10 m...

    Text Solution

    |

  19. In a house 3 bulb of 25 W. Each are used for 5 hours a day. Calculate ...

    Text Solution

    |

  20. State the law of conservation of energy. Show that the energy of a fre...

    Text Solution

    |