Linear Momentum Conservation

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 increases with external forces

• Momentum is not conserved in collisions

• Momentum decreases in a closed system

Explain how momentum is conserved in an isolated system.

• Momentum is conserved only if the system is not isolated.

• Momentum is created in an isolated system due to external forces.

• Momentum is lost in an isolated system during interactions.

• Momentum is conserved in an isolated system because the total momentum before and after any interaction remains constant.

If two objects collide and stick together, what can be said about the total momentum before and after the collision?

• Total momentum is increased

• Total momentum is decreased

• Total momentum is conserved

• Total momentum is multiplied

In a closed system, what happens to the total momentum if there are no external forces acting on it?

• The total momentum remains constant.

• The total momentum fluctuates

• The total momentum increases

• The total momentum decreases

How does the momentum of an object change if there is a net external force acting on it?

• The momentum of an object remains constant regardless of the net external force.

• The momentum of an object changes at a rate proportional to its mass.

• The momentum of an object changes in the direction of the net external force acting on it.

• The momentum of an object changes opposite to the direction of the net external force.

State the equation for the conservation of momentum in a collision.

• m1 * v1_initial * m2 * v2_initial = m1 * v1_final * m2 * v2_final

• m1 * v1_initial - m2 * v2_initial = m1 * v1_final - m2 * v2_final

• m1 + v1_initial + m2 + v2_initial = m1 + v1_final + m2 + v2_final

• m1 * v1_initial + m2 * v2_initial = m1 * v1_final + m2 * v2_final

What is the difference between elastic and inelastic collisions in terms of momentum conservation?

• In inelastic collisions, kinetic energy is conserved.

• In elastic collisions, both momentum and kinetic energy are conserved. In inelastic collisions, only momentum is conserved while kinetic energy is not necessarily conserved.

• In elastic collisions, momentum is not conserved.

• In elastic collisions, kinetic energy is conserved.

If a ball is thrown horizontally from a moving car, how does the momentum of the ball relate to the momentum of the car?

• The ball has greater momentum

• The car has greater momentum

• They are independent

• They are equal in magnitude

Explain how momentum is transferred between objects in a collision.

• Momentum is transferred between objects in a collision through forces acting between the objects, following the principle of conservation of momentum.

• Momentum is transferred by gravitational pull

• Momentum is transferred by sound waves

• Momentum is transferred through electromagnetic fields

Why is momentum considered a vector quantity?

• Momentum has both magnitude and direction, making it a vector quantity.

• Momentum is not affected by direction.

• Momentum is a scalar quantity.

• Momentum has only magnitude.