Physics I - Chapter 10 conceptual

Which of the following statements are true about the energy of the two bullet-block systems immediately after the collisions? (Select all that apply.)

1. The two bullet-block systems have the same total energy. 2. The two bullet-block systems have the same translational kinetic energy. 3. More energy from the bullet went into deforming the block in the first case (bullet in center) than the second (bullet closer to its edge).

Which of the following statements provides correct reasoning for why both bullet-block systems reached the same maximum height?

Both systems had the same momentum and mass after the collision. This means that both systems must also have the same velocity after the collision and will therefore reach the same maximum height.

As you saw in the video, the two blocks had about the same mass, and both were initially at rest. Which of the following is true about the two bullet-block systems, just after the bullets collided with their respective blocks?

From conservation of momentum, the momentum of the bullet-block system after the collision is the same as the momentum of the bullet before the collision. Since the two bullets had the same initial momentum, the two bullet-block systems must have the same final momentum.

As you saw in the video, the two bullets in the experiment were fired from the same rifle. Assume the bullets also had the same mass and were fired from identically prepared cartridges. From this, what can we conclude about the initial momentum of the bullets just before they struck the blocks?

The bullets had the same momentum just before colliding with the block.

Imagine comparing the two blocks after the experiment. In which block would we expect the bullet to be embedded the greatest distance?

the first block (the one with the bullet in its center)