Momentum and Collisions

Which of the following statements best defines momentum?

• The rate of change of an object’s position

• The product of an object's mass and velocity

• The force applied to an object over time

• The energy possessed by an object due to its motion

Tags

NGSS.HS-PS2-2

If an object has a mass of 10 kg and is moving at a velocity of 5 m/s, what is its momentum?

• 50 kg·m/s

• 15 kg·m/s

• 2 kg·m/s

• 5 kg·m/s

Tags

NGSS.HS-PS2-2

A 3 kg object moving at 4 m/s collides with a stationary 2 kg object in an inelastic collision. What is the final velocity of the combined mass after the collision?

• 2.4 m/s

• 3.0 m/s

• 3.6 m/s

• 4.0 m/s

Tags

NGSS.HS-PS2-2

Which of the following best describes the difference between elastic and inelastic collisions?

• Elastic collisions involve only solid objects, while inelastic collisions can involve liquids.

• Inelastic collisions conserve momentum, while elastic collisions do not.

• Elastic collisions conserve both momentum and kinetic energy, while inelastic collisions do not conserve kinetic energy.

• Inelastic collisions are always more violent than elastic collisions.

Tags

NGSS.HS-PS2-2

According to the Impulse-Momentum Theorem, which of the following statements is true?

• Impulse is equal to the total energy of an object.

• Impulse equals the change in momentum of an object.

• Impulse is independent of the time interval.

• Impulse only occurs during collisions.

Tags

NGSS.HS-PS2-2

NGSS.HS-PS2-3

In a perfectly elastic collision, which of the following statements is true about momentum?

• Momentum is not conserved.

• Momentum is conserved only in one dimension.

• Total momentum before the collision equals total momentum after the collision.

• Momentum is lost as heat during the collision.

Tags

NGSS.HS-PS2-2

In a car collision where a 1500 kg car traveling at 10 m/s comes to a stop in 0.1 seconds after hitting a wall, which of the following is the average force exerted on the car?

• 150 000 N

• 300 000 N

• 75 000 N

• 50 000 N

Tags

NGSS.HS-PS2-1

If an object experiences an impulse of 20 N · s and its initial momentum was 50 kg · m/s, what is its final momentum?

• 30 kg · m/s

• 70 kg · m/s

• 50 kg · m/s

• 20 kg · m/s

Tags

NGSS.HS-PS2-2

Which of the following statements best describes the Law of Conservation of Momentum?

• The total momentum of an open system remains constant.

• The total momentum of a closed system remains constant.

• Momentum can be created or destroyed in collisions.

• Momentum is only conserved in elastic collisions.

Tags

NGSS.HS-PS2-2

What is the primary reason rockets can propel themselves in the vacuum of space?

• A) They push against the air.

• B) They eject mass in one direction, resulting in thrust in the opposite direction.

• C) They rely on gravitational pull from nearby celestial bodies.

• D) They use solar sails to catch sunlight.

Tags

NGSS.HS-PS2-1