P1 Collisions Flashcard #1 no 2D

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Physics
•
9th - 12th Grade
•
Hard
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1.
FLASHCARD QUESTION
Front
What is the principle of conservation of momentum?
Back
The principle of conservation of momentum states that the total momentum of a closed system remains constant if no external forces act on it. This means that the momentum before an event (like a collision) is equal to the momentum after the event.
2.
FLASHCARD QUESTION
Front
Define momentum in physics.
Back
Momentum is the product of an object's mass and its velocity. It is a vector quantity, meaning it has both magnitude and direction. The formula for momentum (p) is p = m * v, where m is mass and v is velocity.
3.
FLASHCARD QUESTION
Front
How do you calculate the final velocity of an object after a collision?
Back
To calculate the final velocity after a collision, use the conservation of momentum formula: m1 * v1 + m2 * v2 = m1 * v1' + m2 * v2', where m1 and m2 are the masses, v1 and v2 are the initial velocities, and v1' and v2' are the final velocities.
4.
FLASHCARD QUESTION
Front
What is an elastic collision?
Back
An elastic collision is a type of collision where both momentum and kinetic energy are conserved. In such collisions, the objects bounce off each other without any loss of total kinetic energy.
5.
FLASHCARD QUESTION
Front
What is an inelastic collision?
Back
An inelastic collision is a type of collision where momentum is conserved, but kinetic energy is not. In these collisions, the objects may stick together or deform, resulting in a loss of kinetic energy.
6.
FLASHCARD QUESTION
Front
If a 95 kg astronaut throws a 15 kg tank at 9.6 m/s, what is the astronaut's final speed?
Back
The astronaut's final speed is -1.52 m/s, calculated using conservation of momentum.
7.
FLASHCARD QUESTION
Front
What happens to the velocity of an object when it collides with another object of greater mass?
Back
In a collision with a larger mass, the smaller mass will typically experience a greater change in velocity, often reversing direction, while the larger mass will have a smaller change in velocity.
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