Class 9 Exam > Class 9 Questions > A cracker at rest explodes into two equal par...
Start Learning for Free
A cracker at rest explodes into two equal parts. These parts will move in :
- a)opposite direction with different velocities
- b)same direction with different velocities
- c)same direction with same velocities
- d)opposite direction with same velocities
Correct answer is option 'D'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
A cracker at rest explodes into two equal parts. These parts will move...
In order to conserve momentum the two parts move in the opposite direction and have same momentum.
Most Upvoted Answer
A cracker at rest explodes into two equal parts. These parts will move...
Explanation:
When a cracker is at rest, it means it is not moving and has no velocity. When it explodes, it breaks into two equal parts.
Conservation of Momentum:
According to the law of conservation of momentum, the total momentum before the explosion is equal to the total momentum after the explosion. Momentum is a vector quantity and its direction is important in this context.
Opposite Direction:
When the cracker explodes, the two equal parts move in opposite directions. This is because the momentum of the system should be conserved. If both parts were to move in the same direction, the total momentum after the explosion would not be equal to the total momentum before the explosion.
Equal Velocities:
Since the cracker breaks into two equal parts, the masses of the two parts are also equal. According to the equation for momentum (p = mv), if the masses are equal, the velocities should also be equal in order to conserve momentum.
Conclusion:
Therefore, the correct answer is option 'D': The two parts of the cracker move in opposite directions with the same velocities.
When a cracker is at rest, it means it is not moving and has no velocity. When it explodes, it breaks into two equal parts.
Conservation of Momentum:
According to the law of conservation of momentum, the total momentum before the explosion is equal to the total momentum after the explosion. Momentum is a vector quantity and its direction is important in this context.
Opposite Direction:
When the cracker explodes, the two equal parts move in opposite directions. This is because the momentum of the system should be conserved. If both parts were to move in the same direction, the total momentum after the explosion would not be equal to the total momentum before the explosion.
Equal Velocities:
Since the cracker breaks into two equal parts, the masses of the two parts are also equal. According to the equation for momentum (p = mv), if the masses are equal, the velocities should also be equal in order to conserve momentum.
Conclusion:
Therefore, the correct answer is option 'D': The two parts of the cracker move in opposite directions with the same velocities.
Attention Class 9 Students!
To make sure you are not studying endlessly, EduRev has designed Class 9 study material, with Structured Courses, Videos, & Test Series. Plus get personalized analysis, doubt solving and improvement plans to achieve a great score in Class 9.
|
Explore Courses for Class 9 exam
|
|
Similar Class 9 Doubts
Top Courses for Class 9View all
A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer?
Question Description
A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer?.
A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? for Class 9 2024 is part of Class 9 preparation. The Question and answers have been prepared according to the Class 9 exam syllabus. Information about A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 9 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer?.
Solutions for A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Class 9.
Download more important topics, notes, lectures and mock test series for Class 9 Exam by signing up for free.
Here you can find the meaning of A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer?, a detailed solution for A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? has been provided alongside types of A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice A cracker at rest explodes into two equal parts. These parts will move in :a)opposite direction with different velocitiesb)same direction with different velocitiesc)same direction with same velocitiesd)opposite direction with same velocitiesCorrect answer is option 'D'. Can you explain this answer? tests, examples and also practice Class 9 tests.
|
|
Explore Courses for Class 9 exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup