Momentum Conservation Concepts Quiz

Which of the following best describes the law of conservation of momentum?

• Momentum is always lost in a collision.

• The total momentum of a system remains constant if no external forces act on it.

• Momentum can be created or destroyed in an isolated system.

• Momentum is only conserved in elastic collisions.

What is the primary condition for the conservation of momentum in a system?

• The system must be at rest.

• There must be no net external force acting on the system.

• The system must be moving at a constant velocity.

• The system must be in a vacuum.

Which of the following scenarios best illustrates the conservation of momentum?

• A car accelerating on a highway.

• Two ice skaters pushing off each other and moving in opposite directions.

• A ball rolling down a hill.

• A rocket launching into space.

In a closed system, if two objects collide and stick together, what can be said about the total momentum before and after the collision?

• The total momentum is greater after the collision.

• The total momentum is less after the collision.

• The total momentum remains the same before and after the collision.

• The total momentum is zero after the collision.

How does the concept of momentum conservation apply to a rocket in space?

• The rocket's momentum is conserved only when it is stationary.

• The rocket's momentum is conserved as it expels gas in the opposite direction.

• The rocket's momentum is not conserved because it is in motion.

• The rocket's momentum is conserved only when it reaches its destination.

What happens to the momentum of a system if an external force acts on it?

• The momentum of the system remains unchanged.

• The momentum of the system is conserved.

• The momentum of the system changes.

• The momentum of the system becomes zero.

Which of the following is an example of a system where momentum is conserved?

• A car braking to a stop.

• A pendulum swinging in a vacuum.

• A ball bouncing off a wall in an isolated system.

• A leaf falling from a tree.

In a perfectly inelastic collision, what happens to the kinetic energy and momentum of the system?

• Both kinetic energy and momentum are conserved.

• Kinetic energy is conserved, but momentum is not.

• Momentum is conserved, but kinetic energy is not.

• Neither kinetic energy nor momentum is conserved.

How does the conservation of momentum explain the motion of a balloon releasing air?

• The balloon moves in the opposite direction to the air due to momentum conservation.

• The balloon remains stationary as air is released.

• The balloon moves in the same direction as the air.

• The balloon's motion is unrelated to momentum conservation.

What is the relationship between force and momentum in a system with no external forces?

• Force is directly proportional to momentum.

• Force is inversely proportional to momentum.

• There is no net force, so momentum is conserved.

• Force and momentum are unrelated.