Home
Class 11
PHYSICS
A boat is moving directly away from a gu...

A boat is moving directly away from a gun on the shore with speed `v_(1)`. The gun fires a shell with speed `v_(2)` at anangle of elevation `alpha` and hits the boat. Prove that the distance of the boat from the gun at the moment it is fired is given by:
`(2v_(2) sin alpha)/(g) (v_(2) cos alpha - v_(1))`

Promotional Banner

Topper's Solved these Questions

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Discussion Question|18 Videos

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Conceptual MCQs Single Option Correct|35 Videos

  • KINEMATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Pro.|83 Videos

  • GRAVITATION

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical|94 Videos

  • LINEAR MOMENTUM & ITS CONSERVATION

    PHYSICS GALAXY - ASHISH ARORA|Exercise exercise 1.3|3 Videos

Similar Questions

Explore conceptually related problems

If the range of a gun which fires a shell with muzzle speed V is R , then the angle of elevation of the gun is

A partical moves from A to B for the first one-third with speed v_(1) and the next two-third time with speed v_(2) . Find the average speed.

A particle moves in a straight line from A to B with speed v_(1) and then from B to A with speed v_(2) . Find the average velocity and average speed.

A gun of mass M fires a bullet of mass m with a horizontal speed V. The gun is fitted with a concave mirror of focal length f facing towards the receding bullet. Find the speed of separation of the bullet and the image just after the gun was fired.

If a car covers 2/5 th of the total distance with v_(1) speed and 3/5th distance with v_(2) then average speed is

A shell is fired vertically upwards with a velocity v_(1) from the deck of a ship travelling at a speed of v_(2) . A person on the shore observes the motion of the shell as parabola. Its horizontal range is given by:

A gun of muzzle speed v_(0) is situated at height h above a horizontal plane. Prove that the angle at which it must be fired so as to achieve the greatest range on the plane is given by- theta = (1)/(2)cos^(-1) ((gh)/(v_(0)^(2)+gh))

A gun of mass m_1 fires a bullet of mass m_2 with a horizontal speed v_0 . The gun is fitted with a concave mirror of focal length f facing towards a receding bullet.Find the speed of separations of the bullet and the image just after the gun was fired.

PHYSICS GALAXY - ASHISH ARORA-KINEMATICS-Practice Exercise
  1. Two bodies are thrown at the same time and in opposite directions and ...

    Text Solution

    |

  2. A ball rolls off top of a staircase with a horizontal velocity u m s^-...

    Text Solution

    |

  3. A boat is moving directly away from a gun on the shore with speed v(1)...

    Text Solution

    |

  4. Two bodies were thrown simultaneously from the same point, one, straig...

    Text Solution

    |

  5. Two particles are projected from a point at the same instant with velo...

    Text Solution

    |

  6. A ball is thrown from a point in level with velocity u and at a horizo...

    Text Solution

    |

  7. In a "RamLeela"stage show an unhappy guy from audience throws an rotte...

    Text Solution

    |

  8. A machine gun is mounted on the top of a tower of height h=100 m. At w...

    Text Solution

    |

  9. A partacle is thrown in horizontal direction with speed u from a point...

    Text Solution

    |

  10. From an inclined plane a particleis thrown in a direction normal to th...

    Text Solution

    |

  11. A body is projected up with a speed v0 along the line of greatest slop...

    Text Solution

    |

  12. A partacle is thrown in horizontal direction with speed u from a point...

    Text Solution

    |

  13. In example 1.49 find the velocity of the mid point of the rod in terms...

    Text Solution

    |

  14. Two rings O and O' are put on two vertical stationary rods AB and A'B'...

    Text Solution

    |

  15. An aircraft is descending to land at an airport in the morning. The ai...

    Text Solution

    |

  16. Figure shows s small mass m hanging over a pulley. The other end of th...

    Text Solution

    |

  17. A man of height 1.2 m walks away from a lamp hanging at a height of 4....

    Text Solution

    |

  18. Find the speed of the box-3, if box-1 and box-2 are moving with speeds...

    Text Solution

    |

  19. A smooth ring A of mass m can slide on a fixed horizontal rod. A strin...

    Text Solution

    |

  20. Figure shows a pulley over which is string passes and connected to two...

    Text Solution

    |