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A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded.
1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion.
2. The total momentum of the bomb fragments is the same as that of the bomb before explosion.
3. The total momentum of all the bomb fragments together is zero.
  • a)
    1,2 and 3
  • b)
    1 only
  • c)
    3 only
  • d)
    2 only
Correct answer is option 'C'. Can you explain this answer?
Verified Answer
A bomb at rest on a horizontal frictionless surface explodes and break...
So as no external force acts upon the system, we can say that momentum of the system remains conserved but as an internal force acts that explodes the bomb, the KE of the system is never conserved. But every fragment has some non zero momentum while the bomb initially has zero momentum.
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Most Upvoted Answer
A bomb at rest on a horizontal frictionless surface explodes and break...
No external force so momentum will be conserved So answer goes to(c). (b) is incorrect because KE is Scaler quantity and does not depend on direction of motion. it just get added. Momentum is Vector quantity
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Community Answer
A bomb at rest on a horizontal frictionless surface explodes and break...
When we assume the whole phenomena to be in a system ... we get total momentum to be zero...as all get cancelled out..so (c) is the correct answer.
But we explosion. is lead due to chemical energy which provides impulsive forces and so individually fragments will acquire great velocity and thus their momentum and kinetic energy will not remain same..... so all other options are not correct
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A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded.1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion.2. The total momentum of the bomb fragments is the same as that of the bomb before explosion.3. The total momentum of all the bomb fragments together is zero.a)1,2 and 3b)1 onlyc)3 onlyd)2 onlyCorrect answer is option 'C'. Can you explain this answer?
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A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded.1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion.2. The total momentum of the bomb fragments is the same as that of the bomb before explosion.3. The total momentum of all the bomb fragments together is zero.a)1,2 and 3b)1 onlyc)3 onlyd)2 onlyCorrect answer is option 'C'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded.1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion.2. The total momentum of the bomb fragments is the same as that of the bomb before explosion.3. The total momentum of all the bomb fragments together is zero.a)1,2 and 3b)1 onlyc)3 onlyd)2 onlyCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A bomb at rest on a horizontal frictionless surface explodes and breaks into three pieces that fly apart horizontally as shown below. Select all of the following statements that must be true after the bomb has exploded.1. The total kinetic energy of the bomb fragments is the same as that of the bomb before explosion.2. The total momentum of the bomb fragments is the same as that of the bomb before explosion.3. The total momentum of all the bomb fragments together is zero.a)1,2 and 3b)1 onlyc)3 onlyd)2 onlyCorrect answer is option 'C'. Can you explain this answer?.
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