Momentum and Collisions

William, Abigail, and Aiden are playing a game of pool. According to the law of conservation of momentum, what should happen?

• The total momentum of the pool balls (a closed system) remains constant if no external forces (like the pool cue) act on it.

• The law of conservation of momentum only applies when the pool balls are at rest.

• The total momentum of the pool balls (a closed system) changes if external forces (like the pool cue) act on it.

• The law of conservation of momentum only applies when the pool balls are in motion.

Tags

NGSS.HS-PS2-2

Hannah and Samuel are playing a game of marbles. They noticed that when their marbles collide, they bounce off each other and continue moving, but their speed doesn't seem to change. David, who is watching them, says this is an example of a certain type of collision. What type of collision is David referring to?

• A collision where the total kinetic energy of the colliding objects is lost.

• A collision where the total kinetic energy of the colliding objects is conserved.

• A collision where the colliding objects change shape.

• A collision where the colliding objects stick together.

Michael and Nora are playing a game of pool. Michael hits the cue ball towards another ball. The cue ball slows down after hitting the other ball, but the total momentum of the two balls remains the same. How would you define this type of collision?

• This is an inelastic collision, a type of collision in which both kinetic energy and momentum are conserved.

• This is an inelastic collision, a type of collision in which kinetic energy is not conserved.

• This is an inelastic collision, a type of collision in which only momentum is conserved.

• This is an inelastic collision, a type of collision in which momentum is not conserved.

Tags

NGSS.HS-PS2-2

Samuel, Elijah, and Evelyn are studying physics. They are trying to calculate the impulse experienced by a soccer ball when Samuel kicks it. Which formula should they use?

• J = F / t

• J = F * t

• J = m * v

• J = P * t

James, Avery, and Liam are playing a game of pool. Using the principle of conservation of momentum, explain what happens to the total momentum of the pool balls (a closed system) if no external forces act on it.

• The total momentum of the pool balls increases if external forces act on it.

• The total momentum of the pool balls decreases if external forces act on it.

• The total momentum of the pool balls remains constant if no external forces act on it.

• The total momentum of the pool balls is not affected by external forces.

Tags

NGSS.HS-PS2-2

Noah and William are playing a game of pool. What happens to the momentum when the pool balls collide elastically?

• The momentum is lost.

• The momentum is conserved.

• The momentum is doubled.

• The momentum is halved.

Tags

NGSS.HS-PS2-2

Abigail and Avery are playing a game of pool. Lily observes that when the pool balls collide, they don't bounce off each other perfectly. What happens to the momentum in such an inelastic collision?

• The momentum increases.

• The momentum decreases.

• The momentum becomes zero.

• The momentum remains constant.

Tags

NGSS.HS-PS2-2

Arjun and Avery are playing a game of billiards. Olivia is observing them. According to their game, which situation can be considered as an example of an elastic collision?

• When Arjun's billiard ball collides with Avery's and they bounce off each other without any loss of kinetic energy.

• When Avery's billiard ball bounces off the edge of the table and loses some of its energy.

• When Arjun's and Avery's billiard balls collide and come to a complete stop.

• When Olivia throws a baseball at the wall and it sticks to it.

Tags

NGSS.HS-PS2-2

During a car crash test, Daniel's car hits a wall and crumples upon impact. Nora observes this and wonders what type of collision this is an example of. What would you tell her?

• This is an example of an inelastic collision, where two objects collide and stick together.

• This is an example of a collision where two objects collide and move away from each other with no change in their velocities.

• This is an example of a collision where two objects collide and bounce off each other with no loss of kinetic energy.

• This is an example of a collision where two objects collide and bounce off each other with some loss of kinetic energy.

Tags

NGSS.HS-PS3-1

Object 1 has a mass of 20 kg and an initial velocity of 5 m/s, and object 2 has a mass of 30 kg and an initial velocity of 6 m/s. What is their total momentum?

• 280

• 30

• 180

• 100

Tags

NGSS.HS-PS2-2