Home
Class 11
PHYSICS
An object of mass 5kg falls from rest th...

An object of mass 5kg falls from rest through a verticle distance of 20m and reaches a velocity of `10ms^-1`. How much work is done by the push of the air on the object? `(g = 10 ms^2)`

Promotional Banner

Topper's Solved these Questions

  • GRAVITATION

    CHETANA PUBLICATION|Exercise EXERCISE|76 Videos

  • MAGNETISM

    CHETANA PUBLICATION|Exercise EXERCISE|118 Videos

Similar Questions

Explore conceptually related problems

A metal ball of mass 5 kg falls from a height of 490 m. How much time will it take to reach the ground ?

The velocity of a car increases from 54 km/hr to 72 km/hr. How much is the work done if the mass of the car is 1500 kg?

A cricket ball of mass 0.5 kg strikes a circket bat normally with a velocity of 20" m s"^(-1) and rebounds with a velocity of 10" m s"^(-1) . The impulse of the force exerted by the ball on the bat is

A body of mass 5 kg is lifted through a height of 20 m. Calculate the work done by the applied force.

An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity ? How long will the object take to come back to the earth ? Assume g = 10 m//s^(2)

A bullet of mass 10 g is fired with a velocity of 100 m/s from a rifle of mass 2.5 kg, the recoil velocity of the rifle is

The velocity of a car increase from 54 km/ hr to 75 km/hr. How much is the work done if the mass of the car is 1500 kg ?

If two objects of masses 500kg and 84kg resprecitvley are at a distance of 2m apart from each other.Find gravitational force between them?

An object thrown vertically upwards reaches a height of 320 m. What was its initial velocity? How long will the object take to come back to the earth ? Assume g=10m/s^(2) .

An object thrown vertically upwards reahces a height of 500m.What was its initial velocity? How long will the object take to come back to the Earth?assume g= 10m//s^2

CHETANA PUBLICATION-LAWS OF MOTION -EXERCISE
  1. A force F = (2 + x) acts on a particle in x-direction, where F is in n...

    Text Solution

    |

  2. The potential energy of a conservative is given by u = ax^2 - bx, wher...

    Text Solution

    |

  3. An object of mass 5kg falls from rest through a verticle distance of 2...

    Text Solution

    |

  4. Choose the correct options Consider following pair of forces of equal...

    Text Solution

    |

  5. Choose the correct options Consider following forces: (w) Force due t...

    Text Solution

    |

  6. Choose the correct options At a given instant three point masses m, 2...

    Text Solution

    |

  7. Choose the correct options The rough surface of a horizontal table of...

    Text Solution

    |

  8. Choose the correct options A mass 2 m moving with some speed is direc...

    Text Solution

    |

  9. Choose the correct options A uniform rod of mass 2 m is held horizont...

    Text Solution

    |

  10. Choose the correct options Select WRONG statement about centre of mas...

    Text Solution

    |

  11. Choose the correct options For which of the following objects will ce...

    Text Solution

    |

  12. Choose the correct options Action and reaction forces do not cancel e...

    Text Solution

    |

  13. Choose the correct options A force vector applied on a mass is repres...

    Text Solution

    |

  14. Choose the correct options A ball of mass 250 g moving with 20 m//s s...

    Text Solution

    |

  15. Choose the correct options ……..force is defined in order to apply New...

    Text Solution

    |

  16. Choose the correct options Which of the following is NOT an example o...

    Text Solution

    |

  17. Choose the correct options The electrostatic and gravitional foces ar...

    Text Solution

    |

  18. Choose the correct options The range of nuclear force is nearly

    Text Solution

    |

  19. Choose the correct options A light and heavy body have equal K.E Whic...

    Text Solution

    |

  20. Choose the correct options Choose the WRONG statement.

    Text Solution

    |