Conservation of Momentum in Two Dimensions Quiz

What is a key characteristic of momentum that allows it to be represented as an arrow?

• It is a unitless measure.

• It is a scalar quantity.

• It is a vector quantity.

• It is a constant value.

Which of the following statements is true about the conservation of momentum in two dimensions?

• Only the x-component of momentum is conserved.

• Both x and y components of momentum are conserved.

• Only the y-component of momentum is conserved.

• Momentum is not conserved in two dimensions.

In the practice problem, what is the initial condition of ball B?

• Ball B is moving at an unknown speed.

• Ball B is moving at 10 m/s.

• Ball B is at rest.

• Ball B is moving at 15 m/s.

What is the initial velocity of ball A before the collision?

• 15 m/s

• 10 m/s

• 5 m/s

• 20 m/s

How do you calculate the x-component of velocity for ball B after the collision?

• By adding the x-components of both balls' velocities.

• By dividing the total momentum by the mass of ball B.

• By multiplying the mass of ball B by its velocity.

• By subtracting the x-component of ball A's velocity from the total momentum.

What is the x-component of velocity for ball B after the collision?

• 9 m/s

• 11 m/s

• 8 m/s

• 10 m/s

How is the y-component of velocity for ball B determined?

• By multiplying the mass of ball B by its velocity.

• By dividing the total momentum by the mass of ball B.

• By subtracting the y-component of ball A's velocity from the total momentum.

• By adding the y-components of both balls' velocities.

What is the y-component of velocity for ball B after the collision?

• -10 m/s

• -7 m/s

• -8 m/s

• -9 m/s

What is the magnitude of the velocity of ball B after the collision?

• 13 m/s

• 12 m/s

• 11 m/s

• 10 m/s

What is the direction of the velocity of ball B after the collision?

• 41.6 degrees to the right of the y-axis

• 41.6 degrees above the x-axis

• 41.6 degrees below the x-axis

• 41.6 degrees to the left of the y-axis