Home
Class 11
PHYSICS
A body is thrown vetically upward at t =...

A body is thrown vetically upward at `t = 0`. It is at a height 80 m at two instant `t_(1)` and `t_(2)`, then `t_(1) t_(2)` is: (Take `g = 10 m//s^(2)`)

A

30

B

24

C

16

D

12

Text Solution

Verified by Experts

The correct Answer is:
C

`t_(1) t_(2) = (2H)/(g)`
`t_(1) t_(2) = (2 xx 80)/(10) = 16`
Promotional Banner

Topper's Solved these Questions

  • MOTION IN A STRAIGHT LINE

    GRB PUBLICATION|Exercise More than one choice is correct|16 Videos
  • MOTION IN A STRAIGHT LINE

    GRB PUBLICATION|Exercise Assertion Reason|12 Videos
  • MOTION IN A STRAIGHT LINE

    GRB PUBLICATION|Exercise Problems and Practice|16 Videos
  • FRICTION AND CIRCULAR MOTION

    GRB PUBLICATION|Exercise Comprehension type|11 Videos
  • MOTION IN TWO AND THREE DIMENSIONS

    GRB PUBLICATION|Exercise All Questions|210 Videos

Similar Questions

Explore conceptually related problems

A body is projected vertically upwards at time "t=0" and it is seen at a height H at instants t_(1) and t_(2)seconds during its flight.The maximum height attained is (g is acceleration due to gravity

A particle is thrown upward at t=0. It attains maximum height of h. It is found at height h/3 at t = t_1 and t = t_2 . Find t_1/t_2

A particle is thrown with a velocity of u m/s. It passes A and B as shown in figure at time t_(1) = 1 s and t_(2) = 3 s. The value of u is (g = 10 m//s^(2))

At time t=0 a body is thrown vertically upwards with a velocity "50m/sec" .At time t=2 sec another body is thrown vertically upwards with the same velocity "50m/sec" .the two bodies will meet at time__ sec (a=10m/sec^(2))

In the figure shown, find acceleration of the system and tenslons T_(1),T_(2) and T_(3) (Take = 10 m//s^(2))

In the arrangement as shown, tension T_(2) is (g=10m//s^(2))

A particle is thrown with a velocity of u m/s. it passes A and B as shown in figure at time t_(1) = 1 " s " and t_(2) = 3 s . The value of u is (g = 10 m/ s^(2) )

GRB PUBLICATION-MOTION IN A STRAIGHT LINE-Objective question
  1. A particle is moving such that its position vector varies with time as...

    Text Solution

    |

  2. In Q.118, total distance travelled by the particle from t = 0 to t = t...

    Text Solution

    |

  3. A body is thrown vetically upward at t = 0. It is at a height 80 m at ...

    Text Solution

    |

  4. A body is thrown vertically upwards at t = 0. It is at a height 80 m a...

    Text Solution

    |

  5. When a body is thrown up in a lift with a velocity u relative to the l...

    Text Solution

    |

  6. Water drops fall at regular intervals form a hole at the bottom of a v...

    Text Solution

    |

  7. A particle moving along x-axis has acceleration f, at time t, given by...

    Text Solution

    |

  8. A body projected vertically upwords from the top of a tower reaches th...

    Text Solution

    |

  9. A point initially at rest moves along x-axis. Its acceleration varies ...

    Text Solution

    |

  10. A body moving with a uniform acceleration crosses a distance of 65 m i...

    Text Solution

    |

  11. A diwali rocket is ejecting 0.05kg of gases per second at a velocity o...

    Text Solution

    |

  12. A ball is dropped from a bridge at a height of 176.4 m over a river. A...

    Text Solution

    |

  13. Which of the following are true ? (A) A body having constant speed c...

    Text Solution

    |

  14. A constant power P is applied to a car starting from rest. If v is the...

    Text Solution

    |

  15. Displacement (x) of a particle is related to time (t) as x = at + b ...

    Text Solution

    |

  16. The acceleration a (in ms^(-2)) of a body, startin gfrom rest varies w...

    Text Solution

    |

  17. The acceleration of a'particle starting from rest, varies with time ac...

    Text Solution

    |

  18. Two stones are thrown from top of tower, one vertically upward and oth...

    Text Solution

    |

  19. A body is thrown vertically up to reach its maximum height in t second...

    Text Solution

    |

  20. A ball is falling freely from a certain height. When it reached 10 m h...

    Text Solution

    |