Home
Class 12
PHYSICS
A large rectangular box moves vertically...

A large rectangular box moves vertically downward with an acceleration `a`. A toy gun fixed at `A` and aimed towards `C` fires a particle `P`.

A

P will hit C if a = g

B

P will hit the roof BC, if `a gt g`

C

P will hit the wall CD if `a lt g`

D

May be either (A), (B) or (C), depending on the speed of projection of P

Text Solution

Verified by Experts

The correct Answer is:
A, B
Promotional Banner

Topper's Solved these Questions

  • KINEMATICS-2D

    ALLEN |Exercise Exercise (O-1)|40 Videos
  • GRAVITATION

    ALLEN |Exercise EXERCISE 4|9 Videos
  • MOTION IN A PALNE

    ALLEN |Exercise SOLVED EXAMPLE|28 Videos

Similar Questions

Explore conceptually related problems

A rocket is fired vertically from the earth with an acceleration of 2g, where g is the gravitational acceleration. On an inclined plane inside the tocket, making an angle theta with the horizontal, a point object of mass m is kept, the minimum coefficient of friction mu_(min) between the mass and the inclined suface such that the mass does not move is:

A rocket is fired vertically upwards with a net acceleration of 4 m//s^2 and initial velocity zero. After 5s its fuel is finished and it decelerates with g. At the highest point its velocity becomes zero. Then, it accelerates downwards with acceleration g and return back to ground. Plot velocity-time and displacement -time graphs for the complete journey. Take g=10m//s^2.

A rocket is fired vertically upwards with a net acceleration of 4 m//s^2 and initial velocity zero. After 5s its fuel is finished and it decelerates with g. At the highest point its velocity becomes zero. Then, it accelerates downwards with acceleration g and return back to ground. Plot velocity-time and displacement -time graphs for the complete journey. Take g=10m//s^2.

A rocket is fired vertically up from the ground with an acceleration 10 m//s^(2) . If its fuel is finished after 1 minute then calculate - (a) Maximum velocity attained by rocket in ascending motion. (b) Height attained by rocket fuel is finished. (c ) Time taken by the rocket in the whole motion. (d) Maximum height attained by rocket.

A large , heavy box is sliding without friction down a smooth plane of inclination theta . From a point P on the bottom of the box , a particle is projected inside the box . The initial speed of the particle with respect to the box is u , and the direction of projection makes an angle alpha with the bottom as shown in Figure . (a) Find the distance along the bottom of the box between the point of projection p and the point Q where the particle lands . ( Assume that the particle does not hit any other surface of the box . Neglect air resistance .) (b) If the horizontal displacement of the particle as seen by an observer on the ground is zero , find the speed of the box with respect to the ground at the instant when particle was projected .

Two particles of mass m_(1) and m_(2) are projected from the top of a tower. The particle m_(1) is projected vertically downward with speed u and m_(2) is projected horizontally with same speed. Find acceleration of CM of system of particles by neglecting the effect of air resistance.

A particle is moving along a straight line along x-zxis with an initial velocity of 2 m//s towards positive x-axis. A constant acceleration of 0.5 m//s^(2) towards negative x-axis starts acting on particle at t=0 . Find velocity (in m//s ) of particle at t=2 s .

If the container filled with liquid gets accelerated horizontally or vertically, pressure in liquid gets changed. In liquid ( a_(y) ) for calculation of pressure, effective g is used. A closed box horizontal base 6 m by 6 m and a height 2m is half filled with liquid. It is given a constant horizontal acceleration g//2 and vertical downward acceleration g//2 . The maximum value of water pressure in the box is equal to

A particle is moving along a straight line along x-zxis with an initial velocity of 4 m//s towards positive x-axis. A constant acceleration of 1 m//s^(2) towards negative x-axis starts acting on particle at t=0 . Find velocity (in m//s ) of particle at t=2 s .

If the container filled with liquid gets accelerated horizontally or vertically, pressure in liquid gets changed. In liquid ( a_(y) ) for calculation of pressure, effective g is used. A closed box horizontal base 6 m by 6 m and a height 2m is half filled with liquid. It is given a constant horizontal acceleration g//2 and vertical downward acceleration g//2 . Water pressure at the bottomof centre of the box is equal to (atmospheric pressure =10^(5)N//m^(2) density of water =1000 kg//m^(3),g=10m//s^(2) )

ALLEN -KINEMATICS-2D-Exercise (O-2)
  1. A particle is moving with a position vector, vec(r)=[a(0) sin (2pi t) ...

    Text Solution

    |

  2. A point mass is moving in the x-y plane. Its acceleration is a constan...

    Text Solution

    |

  3. A ball is thrown from ground such that it just crosses two poles of eq...

    Text Solution

    |

  4. Position vector of a particle is expressed as function of time by equa...

    Text Solution

    |

  5. A projectile is thrown with speed u into air from a point on the horiz...

    Text Solution

    |

  6. A block is thrown with a velocity of 2m//s^(-1) (relative to ground) o...

    Text Solution

    |

  7. A man on a rectilinearly moving cart, facing the direction of motion, ...

    Text Solution

    |

  8. A cubical box dimension L = 5//4 m starts moving with an acceleration ...

    Text Solution

    |

  9. A large rectangular box moves vertically downward with an acceleration...

    Text Solution

    |

  10. In the figure there is a long horizontal bridge over a river 75 m high...

    Text Solution

    |

  11. In the figure there is a long horizontal bridge over a river 75 m high...

    Text Solution

    |

  12. In the figure there is a long horizontal bridge over a river 75 m high...

    Text Solution

    |

  13. From the ground level, a ball is to be shot with a certain speed. Grap...

    Text Solution

    |

  14. From the group level, a ball is to be shot with a certain speed. Graph...

    Text Solution

    |

  15. Match the following A particle is projected with initial speed u-...

    Text Solution

    |

  16. Match the following A particle is projected from a large fixed in...

    Text Solution

    |

  17. Match the following In groung to ground projection a particle is ...

    Text Solution

    |

  18. A small ball is prjected along the surface of a smooth inclined plane ...

    Text Solution

    |

  19. Match the following

    Text Solution

    |

  20. A boat is being rowed in a river. Air is also blowing. Direction of ve...

    Text Solution

    |