Home
Class 11
PHYSICS
From the top of a tower of height 78.4 m...

From the top of a tower of height `78.4 m` two stones are projected horizontally with `10 m//s` and `20 m//s` in opposite directions. On reaching the ground, their separation is

A

`120 m`

B

`100 m`

C

`200 m`

D

`150 m`

Text Solution

Verified by Experts

The correct Answer is:
A
`x=(u_(1)+u_(2))sqrt((2h)/g)`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A PLANE

    NARAYNA|Exercise Level-I (H.W)|41 Videos

  • MECHANICAL PROPERTIES OF SOLIDS

    NARAYNA|Exercise LEVEL-II (H.W)|24 Videos

  • MOTION IN A STRAIGHT LINE

    NARAYNA|Exercise Level 2 H.W|29 Videos

Similar Questions

Explore conceptually related problems

From the top of tower of height 80 m , two stones are projected horizontally with velocities 20 m s^-1 and 30 m s^-1 in opposite directions, Find the distance between both the stones on reaching the ground ("in" 10^2 m) .

A body projected horizontally with a velocity V from the top of a tower of height h touches the level ground at a distance X from the foot of the tower. Another body is projected horizontally with velocity 2V simultaneously from the same point exactly in the opposite direction. On reaching the ground, separation between the two bodies is?

From the top of a tower, 80m high from the ground a stone is thrown in the horizontal direction with a velocity of 8 ms^(1) . The stone reaches the ground after a time t and falls at a distance of d from the foot of the tower. Assuming g=10ms^(2) , the time t and distance d are given respectively by

From the top of a tower of height 200 m , a ball A is projected up with 10 m s^(-1) . And 2 s later another ball B is projected verticall down with the same speed. Then .

A stone is allowed to fall from the top of a tower 300 m height and at the same time another stone is projected vertically up from the ground with a velocity 100 m//s . Find when and where the two stones meet?

A stone is allowed to fall from the top of a tower 100m high and at the same time another stone is projected vertically upwards from the ground with a velocity of 25m//s . Calculate when and where the two stone will meet.

A stone is dropped from the top of a tower 200 m high. At the same time, another stone is projected vertically upwards from the ground with a velocity of 40m//s . Calcuate when and where the two stones will mest.

A stone is project vertically upward from the top of a tower of height 60 m. The stone moves according to the law S=(10)t-5t^(2) , where S is in meters and t in second The maximum height , reached by the stone , from the ground , is

NARAYNA-MOTION IN A PLANE-Level-II(H.W)
  1. The width of a river is 2sqrt3km.A boat is rowed in direction perpendi...

    Text Solution

    |

  2. Person aiming to reach the exactly opposite point on the bank of a str...

    Text Solution

    |

  3. A particle projected from the level ground just clears in its ascent a...

    Text Solution

    |

  4. A stone is projected with a velocity 20sqrt2 m//s at an angle of 45^(@...

    Text Solution

    |

  5. A ball is thrown with velocity 8 ms^(-1) making an angle 60^(@) with t...

    Text Solution

    |

  6. The range of a projectile launched at an angle of 15^(@) with horizont...

    Text Solution

    |

  7. A body is projected obliquely from the ground such that its horizontal...

    Text Solution

    |

  8. A projectile is thrown at angle beta with vertical.It reaches a maximu...

    Text Solution

    |

  9. The maximum height attained by a projectile is increased by 5%. Keepin...

    Text Solution

    |

  10. A gardener wants to wet the garden without moving from his place with ...

    Text Solution

    |

  11. A particle is projected with speed u at angle theta to the horizontal....

    Text Solution

    |

  12. From the top of a tower of height 78.4 m two stones are projected hori...

    Text Solution

    |

  13. A body is projected vertically upwards.At its highest point it explode...

    Text Solution

    |

  14. From the top of a building 80 m high, a ball is thrown horizontally wh...

    Text Solution

    |

  15. A stone is thrown from the top of a tower of height 50 m with a veloci...

    Text Solution

    |

  16. From the top of a tower of height 40m, a ball is projected upward with...

    Text Solution

    |

  17. A body is thrown horizontally with a velocity u from the top of a towe...

    Text Solution

    |

  18. A ball is projected with 20sqrt2 m//s at angle 45^(@) with horizontal....

    Text Solution

    |

  19. A particle is moving along a circular path in xy-plane.When its crosse...

    Text Solution

    |

  20. An insect trapped in a circular groove of radius 12 cm moves along the...

    Text Solution

    |