Conservation of Momentum Problems

Two soccer balls collide. The first soccer ball hits the second soccer ball which was at rest on the ground. What is true of the momentum?

• The total momentum of the isolated system stays the same.

• The total momentum of the isolated system decreases.

• The total momentum of the isolated system increases.

• The total momentum of the isolated system equals zero since the second soccer ball was at rest.

Tags

NGSS.HS-PS2-2

A cannon with a mass of 1455 kg fires a 9.4 kg cannon ball with a velocity of 92 m/s. With what velocity does the cannon move after the cannon ball is fired?

• -0.59 m/s

• 0.59 m/s

• -1.68 m/s

• 1.68 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

While playing a game of pool, a cue ball with a mass of 0.16 kg strikes a yellow ball which has the same mass. The velocity of the cue ball before the collision is 6 m/s. After the collision, the cue ball rebounds in the opposite direction with a velocity of -3 m/s. What is the velocity of the yellow ball immediately after the collision?

• 9 m/s

• -9 m/s

• 3 m/s

• • 3 m/s

• can't be determined

Tags

NGSS.HS-PS2-2

According to the Law of Conservation of Momentum, when two objects collide:

• both objects lose momentum.

• both objects gain momentum

• momentum is neither lost nor gained.

• momentum is always lost or gainer.

Tags

NGSS.HS-PS2-2

What does the principle of conservation of momentum imply for a closed system?

• The total energy of the system is conserved.

• The total momentum of the system before an event is equal to the total momentum after the event.

• The total mass of the system is conserved.

• The total force acting on the system is zero.

Tags

NGSS.HS-PS2-2

In a collision between two objects, which of the following statements is true regarding momentum?

• The total momentum before the collision is always greater than the total momentum after the collision.

• The total momentum before the collision is equal to the total momentum after the collision.

• The total momentum before the collision is always less than the total momentum after the collision.

• Momentum is not conserved in any type of collision.

Tags

NGSS.HS-PS2-2

The Law of Conservation of Momentum states that the total momentum of a closed system is:

• Increasing over time

• Decreasing over time

• Constant, if no external forces act on it

• Zero

Tags

NGSS.HS-PS2-2

According to the Law of Conservation of Momentum, in the absence of external forces, the total momentum of a system

• Increases over time

• Decreases over time

• Remains constant

• Becomes zero

Tags

NGSS.HS-PS2-2

In an inelastic collision, which of the following is true?

• Only momentum is conserved

• Only kinetic energy is conserved

• Both momentum and kinetic energy are conserved

• Neither momentum nor kinetic energy is conserved

Tags

NGSS.HS-PS2-2

In any collision (crash) the ______ is ALWAYS constant

• Total Momentum

• total speed

• total Velocity

• Energy

Tags

NGSS.HS-PS2-2