Home
Class 12
PHYSICS
The escape velocity for a body projected...

The escape velocity for a body projected vertically upwards from the surface of earth is 11 km/s. If the body is projected at an angle of `45^(@)` with the vertical, the escape velocity will be

A

11.2 km/s

B

22.4 km/s

C

`11.2//sqrt(2)` km/s

D

`11.2 sqrt(2)` km/s

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

A body is projected vertically upward from the surface of the earth, then the velocity-time graph is:-

Velocity-time curve for a body projected vertically upwards is with times (s)

The escape speed of body thrown vertically from the surface of earth is 11 km/s. If this body thrown at 45^@ to vertical then its escape speed will be ......

What is the escape velocity from a black hole ?

A ball is projected vertically upwards with a certain initial speed. Another ball of the same mass is projected at an angle of 60^(@) with the vertical with the same initial speed. At highest points of their journey, the ratio of their potential energies will be

What is the value of escape velocity of a body lying on the surface of earth?

The escape velocity for body of mass 1 kg from earth surface is 11.2 km/s, the escape velocity of another body of mass 10 kg will be what ?

For a satellite escape velocity is 11.2 km/s from the earth. If the satellite is launched at an angle of 60° with vertical, then find the escape speed.

What is the value of escape velocity of a body lying on the surface of moon ?

Show that if a body is projected vertically upward from the surface of the earth so as to reach a height nR above the surface (i) the increase in its potential energy is ((n)/(n + 1)) mgR , (ii) the velocity with which it must be projected is sqrt((2ngR)/(n + 1)) , where r is the radius of the earth and m the mass of body.

ALLEN -GRAVITATION-EXERCISE 1
  1. Escape velocity of a body 1 kg mass on a planet is 100 ms^(-1). Gravit...

    Text Solution

    |

  2. The ratio of radii of two satellites is p and the ratio of their accel...

    Text Solution

    |

  3. The escape velocity for a body projected vertically upwards from the s...

    Text Solution

    |

  4. The escape velocity for the earth is 11.2 km / sec . The mass of anoth...

    Text Solution

    |

  5. A body is projected vertically upwards from the surface of the earth w...

    Text Solution

    |

  6. Binding energy of moon and earth is :-

    Text Solution

    |

  7. Two artificial satellites A and B are at a distance r(A) and r(B) abov...

    Text Solution

    |

  8. The average radii of orbits of mercury and earth around the sun are 6x...

    Text Solution

    |

  9. A body is dropped by a satellite in its geo-stationary orbit :

    Text Solution

    |

  10. Two ordinary satellites are revolving round the earth in same elliptic...

    Text Solution

    |

  11. Kepler's second law is a consequence of

    Text Solution

    |

  12. One projectile after deviating from its path starts moving round the e...

    Text Solution

    |

  13. In adjoining figure earth goes around the sun in eliptical orbit on wh...

    Text Solution

    |

  14. Potential energy and kinetic energy of a two particle system under Ima...

    Text Solution

    |

  15. A satellite of earth of mass 'm' is taken from orbital radius 2R to 3R...

    Text Solution

    |

  16. If a graph is plotted between T^(2) and r^(3) for a planet, then its s...

    Text Solution

    |

  17. A planet is revolving around the sun. its distance from the sun at apo...

    Text Solution

    |

  18. A satellite launching statian should be

    Text Solution

    |

  19. A satellite is launched into a circular orbit close to the earth's sur...

    Text Solution

    |

  20. A satellite moves around the earth in a circular orbit with speed v. I...

    Text Solution

    |