Momentum & Impulse

What is the Law of Conservation of Momentum?

• Total momentum of a closed system remains constant if no external forces are acting on it.

• Momentum conservation depends on the mass of the objects

• Momentum is only conserved in open systems

• Momentum is created or destroyed in a closed system

State the formula for calculating momentum.

• p = m * v

• p = m + v

• p = m / v

• p = m ^ v

Explain the concept of impulse.

• Impulse is measured in meters per second.

• Impulse is the result of mass and acceleration.

• Impulse is the same as momentum.

• Impulse is the product of force and the time over which the force acts.

How is impulse related to momentum?

• Impulse is unrelated to momentum

• Impulse is inversely proportional to momentum

• Impulse is related to momentum through the impulse-momentum theorem, where impulse is equal to the change in momentum.

• Impulse is equal to momentum

In a closed system, what happens to the total momentum before and after a collision?

• Total momentum is lost

• Total momentum increases

• Total momentum is conserved

• Total momentum remains constant but changes direction

Give an example of a situation where momentum is conserved.

• Collision between two billiard balls on a frictionless table

• Rolling a ball down a hill

• Two cars colliding on a road with friction

• Throwing a ball straight up in the air

Why is momentum considered a vector quantity?

• Momentum has only magnitude.

• Momentum is a scalar quantity.

• Momentum has both magnitude and direction.

• Momentum does not involve direction.

What are the units of momentum?

• m/s

• kg

• N*s

• kg*m/s

Define perfectly inelastic collision.

• A collision where objects repel each other after impact

• A type of collision in which two objects stick together after colliding and move as one mass.

• A collision where objects change color upon impact

• A collision where objects pass through each other without interaction

How does the coefficient of restitution affect collisions?

• The coefficient of restitution affects collisions by changing the mass of the objects

• The coefficient of restitution has no impact on collisions

• The coefficient of restitution affects collisions by determining the amount of kinetic energy conserved during the collision.

• The coefficient of restitution determines the color of the objects after collision