Impulse and Momentum

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•
Physics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is impulse?
Back
Impulse is the product of the average force applied to an object and the time duration over which the force is applied. It is measured in Newton-seconds (N·s).
2.
FLASHCARD QUESTION
Front
What is momentum?
Back
Momentum is the product of an object's mass and its velocity. It is a vector quantity and is measured in kilogram-meters per second (kg·m/s).
3.
FLASHCARD QUESTION
Front
What is the impulse-momentum theorem?
Back
The impulse-momentum theorem states that the impulse on an object is equal to the change in momentum it causes.
4.
FLASHCARD QUESTION
Front
How do you calculate momentum?
Back
Momentum (p) is calculated using the formula: p = mass (m) × velocity (v).
5.
FLASHCARD QUESTION
Front
If a 5 N force is applied for 2 seconds, what is the impulse?
Back
Impulse = Force × Time = 5 N × 2 s = 10 N·s.
6.
FLASHCARD QUESTION
Front
What happens to momentum in a closed system?
Back
In a closed system, the total momentum before an event is equal to the total momentum after the event, according to the law of conservation of momentum.
7.
FLASHCARD QUESTION
Front
What is the difference between elastic and inelastic collisions?
Back
In elastic collisions, both momentum and kinetic energy are conserved. In inelastic collisions, momentum is conserved, but kinetic energy is not.
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