Home
Class 12
PHYSICS
A bomb is designed to explode 2.00 s af...

A bomb is designed to explode 2.00 s after it is armed. The bomb is launched from Earth and accelerated to an unknown final speed. After reaching its final speed, however, the bomb is observed by people on Earth to explode 4.25 s after it is armed. What is the final speed of the bomb just before it explodes (in terms of c)?

Text Solution

Verified by Experts

The correct Answer is:
0.882
Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

  • RELATIVITY

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (Linked Comprehension)|11 Videos
  • PHOTONS AND MATTER WAVES

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS(Integer Type)|4 Videos
  • RIGID BODY DYNAMICS - I

    RESNICK AND HALLIDAY|Exercise PRACTICE QUESTIONS (INTEGER TYPE))|3 Videos

Similar Questions

Explore conceptually related problems

A bomb is projected obliquely upward. It explods at its highest point such that the pieces fly off with same speed different directions in same vertical plane. Consider motion of the pieces of the bomb before they strike te ground

A bomb is projected obliquely upward. It explodes at its highest point such that the pieces fly off with same speed in different directions in same vertical plane. Consider motion of the pieces of the bomb before they strike the ground

Knowledge Check

  • A particle of mass 1 kg is thrown vertically upwards with speed 100 m/s. after 5 s, it explodes into two parts. One part of mass 300 g comes back with speed 24 m/s, What is the speed of other part just after explosion?

    A
    100 m/s upwards
    B
    600 m/s upwards
    C
    100 m/s downwards
    D
    800 m/s upwards
  • A body is projected horizontally with speed 30m//s from a very high tower. What will be its speed after 4sec-

    A
    `20 m//s`
    B
    `50 m//s`
    C
    `54 m//s`
    D
    `70 m//s`
  • A bus moving along a straight line at 20 m/s undergoes an acceleration of 4 m/ s^(2) . After 2 seconds, its speed will be :

    A
    8 m/s
    B
    12 m/s
    C
    16 m/s
    D
    28 m/s
  • Similar Questions

    Explore conceptually related problems

    A stone with a weight of 5.29 N is launched vertically from ground level with an initial speed of 20.0 m/s, and the air drag on it is 0.265 N throughout the flight. What are (a) the maximum height reached by the stone and (b) its speed just before it hits ground ?

    A car starts accelerating with an acceleration of (1)/(3)m//s^(2) when its speed was 18 km//h . If the desplacement of car in n^(th) minute after it starts accelerating is 4.8km then n is :

    A body of mass 1 kg is projected vertically upwards wit a speed of 100 m/s. After 6 s it explodes into two parts. One part of mass 400 g comes back with speed 25 m/s. What is the velocity of other part just after explosion?

    A particle starts from rest and moves with an angular acceleration of 3 rad //s^(2) in circle of radius 3 m . Its linear speed after 5 seconds will be

    A shell at rest at the origin explodes into 3 fragments A,B and C of masses 1 kg, 2 kg and m kg respectively. A moves along the X-axis with a speed of 12 m/s, B moves along the Y-axis with a speed of 16 m/s and C flies off with a speed of 40 m/s. What is the total mass of the shell before explosion?