Flashcard on Momentum, Impulse and conservation of Momentum

Front

What is momentum?

Back

Momentum is the product of an object's mass and its velocity, represented by the formula p = mv, where p is momentum, m is mass, and v is velocity.

Front

What is impulse?

Back

Impulse is the change in momentum of an object when a force is applied over a period of time, calculated as the product of the average force and the time duration of the force, represented by the formula J = FΔt.

Front

What is the principle of conservation of momentum?

Back

The principle of conservation of momentum states that in a closed system, the total momentum before an event (like a collision) is equal to the total momentum after the event, provided no external forces act on the system.

Front

How does extending the time of a collision affect the force of impact?

Back

Extending the time of a collision decreases the force of impact, as force is inversely related to the time duration of the collision for a given impulse.

Front

Calculate the momentum of a 75 kg biker moving at 5 m/s.

Back

The momentum is 375 kg m/s, calculated using p = mv (75 kg * 5 m/s).

Front

What is the formula for calculating momentum?

Back

The formula for calculating momentum is p = mv, where p is momentum, m is mass, and v is velocity.

Front

If a 0.15 kg cue ball moving at 10 m/s strikes an 8 ball at rest, what is the 8 ball's velocity after the collision if the cue ball's velocity is 2 m/s?

Back

The 8 ball's velocity after the collision is 8 m/s, calculated using conservation of momentum.

Front

Which object has the greatest momentum: 0.05 kg at 0.2 m/s, 0.15 kg at 2 m/s, 0.15 kg at 1 m/s, or 0.4 kg at 2 m/s?

Back

The 0.4 kg object rolling at 2 m/s has the greatest momentum, calculated as p = mv.

Front

What happens to the momentum of a big fish after it swallows a small fish?

Back

The big fish's momentum remains the same, but its velocity decreases after consuming the small fish.

Front

What is the relationship between force, impulse, and momentum?

Back

Impulse is equal to the change in momentum, and it can also be expressed as the product of force and the time duration over which the force acts.