Momentum Flashcards
(28 cards)
What is the definition of momentum?
Momentum is the product of an object’s mass and its velocity.
What is the formula for momentum?
The formula for momentum is p = mv, where p is momentum, m is mass, and v is velocity.
True or False: Momentum is a scalar quantity.
False: Momentum is a vector quantity.
What is the unit of momentum in the SI system?
The unit of momentum is kilogram meter per second (kg·m/s).
Fill in the blank: The law of conservation of momentum states that the total momentum in a closed system _______.
remains constant.
What is the principle behind elastic collisions in terms of momentum?
In elastic collisions, both momentum and kinetic energy are conserved.
What happens to momentum during an inelastic collision?
In inelastic collisions, momentum is conserved, but kinetic energy is not conserved.
True or False: Momentum can be transferred between objects during a collision.
True.
What is impulse?
Impulse is the change in momentum resulting from a force applied over a duration of time.
What is the relationship between impulse and momentum?
Impulse is equal to the change in momentum (Impulse = Δp).
Fill in the blank: Impulse is calculated as _______ multiplied by time.
force.
What does the symbol ‘Δ’ represent in physics?
The symbol ‘Δ’ represents a change in a quantity.
What is the momentum of an object with mass 5 kg moving at 3 m/s?
The momentum is 15 kg·m/s.
True or False: An object at rest has momentum.
False.
What type of collision conserves both momentum and kinetic energy?
Elastic collision.
What is the effect of increasing mass on momentum, assuming velocity remains constant?
Increasing mass increases momentum.
What is the effect of increasing velocity on momentum, assuming mass remains constant?
Increasing velocity increases momentum.
Fill in the blank: In a perfectly inelastic collision, objects _______.
stick together after the collision.
What is the total momentum of a system before and after a collision?
The total momentum is the same before and after the collision.
What is the formula for calculating impulse?
Impulse = Force × Time.
True or False: Two objects can have the same momentum but different masses and velocities.
True.
What is the momentum of a 10 kg object moving at 0.5 m/s?
The momentum is 5 kg·m/s.
What can be said about the momentum of two colliding objects if their masses and velocities are equal?
Their momenta will also be equal.
Fill in the blank: The principle of conservation of momentum applies to _______ systems.
closed.
