Home
Class 9
PHYSICS
The ratio of the height from which two b...

The ratio of the height from which two bodies are dropped is 3:7 respectively. The ratio of their final velocities is

A

`7:3`

B

`9:49`

C

`13:17`

D

`17:13`

Text Solution

Verified by Experts

The correct Answer is:
C
`v = sqrt((2h)/(g))`
`implies v prop sqrt(h)`
`implies (v_1)/(v_2) = sqrt((h_1)/(h_2))`
`= sqrt(3/7) = sqrt(3) : sqrt(7)`
Promotional Banner

Topper's Solved these Questions

  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise CONSOLIDATED EXERCISE (MULTIPLE-CHOICE QUESTIONS WITH ONE OR MORE THAN ONE CORRECT ANSWER)|6 Videos

  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise CHALLENGING EXERCISE|6 Videos

  • DESCRIPTION OF MOTION

    CENGAGE PHYSICS|Exercise CONSOLIDATED EXERCISE (MATCH THE COLUMNS)|3 Videos

  • ELASTICITY

    CENGAGE PHYSICS|Exercise OLYMPIAD AND NTSE LEVEL EXERCISES|10 Videos

Similar Questions

Explore conceptually related problems

Two satellites of identical masses orbit the Earth at different heights. The ratio of their distance from the centre of earth is d : 1 and the ratio of the acceleration due to gravity at those heights is g : 1. Then the ratio of their orbital velocities is ________ .

If the ratio of radius two Cylinders A and B are in the ratio of 2:1 and their heights are in the ratio of 2:1 respectively.The ratio of their total surface areas of Cylinder A to B can be...

Two bodies of equal weight are kept at heights of h and 1.5 h respectively. The ratio of their P.E. is

The radii of two drops are in the ratio of 3 : 2, their terminal velocities are in the ratio

Two bodies of masses m _(1) and m _(2) fall from heights h _(1) and h _(2) respectively. The ratio of their velocities when the hit the ground is

The ratio of heights of two cylinders is 3 :2 and the ratio of their radii is 6 : 7 what is the ratio of their curved surface areas ?

The ratio of heights of two cylinders is 3:2 and the ratio of their radii is 6:7 . What is the ratio of their curved surface areas ?

CENGAGE PHYSICS-DESCRIPTION OF MOTION-CONSOLIDATED EXERCISE (MULTIPLE-CHOICE QUESTIONS WITH ONE CORRECT ANSWER)
  1. A particle moves from A to B with a uniform velocity v1 and from B to ...

    Text Solution

    |

  2. When a ball is released from a top of building the distance covered by...

    Text Solution

    |

  3. The ratio of the height from which two bodies are dropped is 3:7 respe...

    Text Solution

    |

  4. The velocity of a particle at an instant is 10 m/s. After 5 s, the vel...

    Text Solution

    |

  5. A car starts from rest and moves with a uniform acceleration for 2 s. ...

    Text Solution

    |

  6. A stone when thrown with a velocity of 5 m/s attains a maximum height ...

    Text Solution

    |

  7. An ant moves along a circular track of 6 m radius such that the arc of...

    Text Solution

    |

  8. A ball is dropped from a balloon which is rising up with a speed of 2 ...

    Text Solution

    |

  9. If a car travels 30 m and 26 m in its 7^(th) and 6th second of its tra...

    Text Solution

    |

  10. If a ball is thrown upward with a velocity of 6 m/s. The maximum heigh...

    Text Solution

    |

  11. If a body is thrown in air with an angle with horizontal. Then the pat...

    Text Solution

    |

  12. A ball is thrown vertically upward in air. When the particle is at a h...

    Text Solution

    |

  13. Which of the graph shows that the particle is at rest .

    Text Solution

    |

  14. A particle travels half of the circle of radius r. Then the displaceme...

    Text Solution

    |

  15. A ball is dropped from a certain height to fall under gravity. After 1...

    Text Solution

    |

  16. The ratio of maximum height reached by two bodies projected vertically...

    Text Solution

    |

  17. Two trains 1000 m long are moving parallel to each other at a speed of...

    Text Solution

    |

  18. A car travels the first 1//3^(rd) distance at a speed of 30 km/h, the ...

    Text Solution

    |

  19. A bus starts moving with an acceleration 2 m//s^2. A cyclist 96 m behi...

    Text Solution

    |

  20. The velocity of car changes from 40 m/s to 10 m/s in 10 s. The acceler...

    Text Solution

    |