The Principle of Conservation of Momentum (Leaving Cert Physics): Quizzes
📚Quizzes
Practise the questions
11 questions from this quiz
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Practise the questions
11 questions from this quiz
What happens to total momentum when objects interact in an isolated system?
What happens to total momentum when objects interact in an isolated system?
It stays exactly the same
What key condition must be met for momentum conservation to apply?
What key condition must be met for momentum conservation to apply?
No external forces act on system
In , what does represent?
In , what does represent?
Initial velocity before collision
Why must direction be considered in momentum calculations?
Why must direction be considered in momentum calculations?
Momentum is a vector quantity
Which type involves one object breaking into multiple pieces?
Which type involves one object breaking into multiple pieces?
Explosion problems
A 20 kg mass at 4 m/s hits a 14 kg mass at rest. They stick. Final velocity?
A 20 kg mass at 4 m/s hits a 14 kg mass at rest. They stick. Final velocity?
2.35 m/s
A 3 kg gun fires a 0.01 kg bullet at 500 m/s. What is the gun's recoil velocity?
A 3 kg gun fires a 0.01 kg bullet at 500 m/s. What is the gun's recoil velocity?
-1.67 m/s
What effect do internal forces have on total momentum of a system?
What effect do internal forces have on total momentum of a system?
Only redistribute between objects
In explosion problems, what is typically true about initial momentum?
In explosion problems, what is typically true about initial momentum?
Often zero
What should be done first when solving momentum problems?
What should be done first when solving momentum problems?
Identify the system
What is the most common mistake students make in momentum calculations?
What is the most common mistake students make in momentum calculations?
Errors with vector directions