# A2L Item 294

Goal: Unspecified.

Source: Unspecified.

A penny is lying on the bottom of a glass of water. The position of the
penny appears to be:

1. Closer than it really is
2. The same as it really is
3. Farther then it really is
4. Closer, the same, or farther, depending on the angle at which it is
viewed.
5. None of the above

None provided.

# A2L Item 295

Goal: Unspecified.

Source: Unspecified.

Refraction occurs at the interface between two transparent media
because:

1. The mass density of the material changes
2. The frequency of the light changes
3. The speed of the light is different in the two media
4. The direction of the light changes
5. Some of the light is reflected
6. None of the above

None provided.

# A2L Item 293

Goal: Unspecified.

Source: Unspecified.

Consider moving a positive charge from point P to the origin along the
different paths shown in the diagram below. For which path would you do
the most work?

1. Path A
2. Path B
3. Path C
4. Path D
5. Cannot determine
6. None of the above

None provided.

# A2L Item 292

Goal: Unspecified.

Source: Unspecified.

A penny is lying on the bottom of a glass of water. The size of the penny appears to be?

1. Larger than it really is
2. The same as it really is
3. Smaller then it really is
4. Larger, the same, or smaller, depending on the angle at which it is viewed.
5. None of the above

None provided.

# A2L Item 291

Goal: Unspecified.

Source: Unspecified.

A ball is thrown from the top of a tall building with an initial
velocity vo. If it hits the ground 5 seconds later, how tall
is the building?

1. 15 meters.
2. 17.5 meters.
3. 20 meters.
4. 22.5 meters.
5. 25 meters.
6. None of the above.

None provided.

# A2L Item 290

Goal: Unspecified.

Source: Unspecified.

A ball is thrown from the top of a tall building with an initial
velocity vo. If it hits the ground 5 seconds later, how far
from the base of the building does it land?

1. 75 meters.
2. 80 meters.
3. 100 meters.
4. 125 meters.
5. 175 meters.
6. None of the above.

None provided.

# A2L Item 289

Goal: Unspecified.

Source: Unspecified.

A block of mass 2 kg travels along a horizontal frictionless surface
with velocity 3 m/s. The mass collides with another mass, m, and
rebounds with velocity 1 m/s. Mass m is initially at rest. What is the
kinetic energy of mass m after the collision?

1. 10 J
2. 6 J
3. 2 J
4. -4 J
5. -8 J
6. None of the above.
7. Not enough information.

None provided.

# A2L Item 288

Goal: Unspecified.

Source: Unspecified.

A block of mass 2 kg travels along a horizontal frictionless surface
with velocity 3 m/s. The mass collides with a another mass, m, and
rebounds with velocity 1 m/s. What impulse was delivered to mass m?

1. 8 N-s
2. 4 N-s
3. -4 N-s
4. -8 N-s
5. No impulse was delivered.
6. Not enough information.

None provided.

# A2L Item 287

Goal: Unspecified.

Source: Unspecified.

A ball is thrown from the top of a tall building with an initial
velocity vo. What is the magnitude of the velocity when the
ball is at its highest point?

1. 0 m/s
2. 15 m/s
3. 20 m/s
4. 25 m/s
5. 35 m/s
6. None of the above.

None provided.

# A2L Item 286

Goal: Unspecified.

Source: Unspecified.

Two blocks with mass m2 > m1 sit on a horizontal surface having friction. Both blocks are pulled with a constant speed, but v2 < v1, by a rope under tension. Which tension does the most work moving the block a distance D along the surface?

1. T1
2. T2
3. Both do the same work.
4. Cannot be determined.

None provided.