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Flashcards on Momentum and Collisions
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What is momentum?
The product of an object's mass and velocity.
What is the SI unit of momentum?
Kilogram meter per second (kg·m/s)
What is the law of conservation of momentum?
The total momentum of a closed system remains constant before and after a collision.
What are the two types of collisions?
Elastic and inelastic collisions.
What happens to the total momentum in an elastic collision?
It is conserved.
What happens to the total momentum in an inelastic collision?
It is not conserved.
What is the formula for impulse?
Impulse = Force × Time
What is the principle of conservation of momentum?
The momentum of an isolated system is constant if no external forces act on it.
What is an example of a perfectly elastic collision?
Two billiard balls colliding without friction.
What is an example of an inelastic collision?
A car hitting a wall and crumpling.
Which collision type involves a decrease in kinetic energy?
Inelastic collision.
Which collision type involves no loss in kinetic energy?
Elastic collision.
What is the formula for calculating momentum?
Momentum = Mass × Velocity
What happens to the velocity of an object if its mass doubles while its momentum remains constant?
The velocity is halved.
What happens to the momentum of an object if its velocity triples while its mass remains constant?
The momentum triples.
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Test Your Knowledge
Which type of collision involves a decrease in kinetic energy?
Elastic
Inelastic
Unbalanced
Conserved
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What is the SI unit of momentum?
Kilogram
Meter
Kilogram meter per second
Second
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What is momentum?
The product of an object's mass and velocity
The force acting on an object
The distance traveled by an object
The time taken by an object
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Which law states that the total momentum of a closed system remains constant before and after a collision?
Newton's First Law
Newton's Second Law
Law of conservation of momentum
Law of inertia
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What happens to the total momentum in an elastic collision?
It is conserved
It is not conserved
It doubles
It halves
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What is the formula for impulse?
Impulse = Mass / Time
Impulse = Velocity / Force
Impulse = Time × Force
Impulse = Force × Time
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Which collision type involves no loss in kinetic energy?
Elastic collision
Inelastic collision
Perfectly inelastic collision
Completely elastic collision
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What is an example of an inelastic collision?
Two billiard balls colliding
A car hitting a wall and crumpling
A ball bouncing off a floor
Two magnets repelling each other
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What happens to the velocity of an object if its mass doubles while its momentum remains constant?
The velocity doubles
The velocity is halved
The velocity remains the same
The velocity triples
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What is the principle of conservation of momentum?
The total momentum of an object is zero
Momentum can be created or destroyed
The momentum of an isolated system is constant if no external forces act on it
Collision always leads to an explosion
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