Impulse and Momentum Flashcards
(25 cards)
What is the definition of momentum?
Momentum is the product of an object’s mass and its velocity.
What is the formula for calculating momentum?
Momentum (p) is calculated using the formula p = mv, where m is mass and v is velocity.
True or False: Momentum is a scalar quantity.
False: Momentum is a vector quantity.
What is impulse?
Impulse is the change in momentum of an object when a force is applied over a period of time.
What is the formula for impulse?
Impulse (J) is calculated using the formula J = FΔt, where F is force and Δt is the time duration.
Fill in the blank: Impulse is equal to the change in ______.
momentum.
What does the impulse-momentum theorem state?
The impulse-momentum theorem states that the impulse on an object is equal to the change in its momentum.
True or False: The law of conservation of momentum states that the total momentum in a closed system remains constant.
True.
What is the unit of momentum in the SI system?
The unit of momentum is kilogram meter per second (kg·m/s).
What is the unit of impulse in the SI system?
The unit of impulse is also kilogram meter per second (kg·m/s).
In a collision, what happens to the total momentum of the system?
The total momentum of the system remains constant if no external forces act on it.
What is the relationship between force, time, and momentum?
Force applied over time results in a change in momentum.
Multiple choice: Which of the following is true about elastic collisions?
In elastic collisions, both momentum and kinetic energy are conserved.
Multiple choice: Which of the following quantities is conserved in inelastic collisions?
Only momentum is conserved in inelastic collisions.
What is the effect of increasing the time duration over which a force is applied?
Increasing the time duration increases the impulse and thus the change in momentum.
Fill in the blank: A larger mass moving at a lower speed can have the same momentum as a ______ mass moving at a higher speed.
smaller.
True or False: Impulse can be negative.
True: Impulse can be negative if the force acts in the opposite direction of motion.
What happens to momentum in a perfectly inelastic collision?
In a perfectly inelastic collision, the objects stick together and move as one mass after the collision, conserving momentum.
What is the principle of conservation of momentum?
The principle states that in the absence of external forces, the total momentum of a system remains unchanged.
What is the difference between momentum and kinetic energy?
Momentum is dependent on mass and velocity, while kinetic energy is dependent on mass and the square of velocity.
True or False: Momentum can be transferred from one object to another.
True: Momentum can be transferred during collisions.
Multiple choice: Which of the following is a vector quantity?
Momentum.
What is a key factor that affects the impulse delivered to an object?
The magnitude of the force and the duration of time over which it is applied.
Fill in the blank: The total momentum before a collision equals the total momentum ______ the collision.
after.
