AP Physics Unit 1 Review

When a student stands on a rotating table, the frictional force exerted on the student by the table is

• greater in magnitude than the frictional force exerted on the table by the student

• less in magnitude than the frictional force exerted on the table by the student

• equal in magnitude than the frictional force exerted on the table by the student

• directed away from the center of the table

Tags

NGSS.MS-PS2-2

A block of wood initially at rest slides down an inclined plane. Neglecting friction, the kinetic energy of the block at the bottom of the plane is:

• all converted into heat.

• less than its kinetic energy at the top of the plane.

• dependent on the materials of which the block is made.

• equal to its potential energy (with respect to the bottom of the plane) when it was at the top of the plane.

Tags

NGSS.MS-PS3-2

NGSS.MS-PS3-5

A 3.00 kg bucket of water is raised with an upward acceleration of 2.20 meters per second squared from a well by means of an attached rope. What is the tension in the rope?

• 30.2 N

• 33.3 N

• 36.6 N

• 39.0 N

Tags

NGSS.HS-PS2-1

Three blocks (m1=1 kg, m2=2 kg, m3=3 kg) connected by cords are pulled by a constant force, F, of 18 N on a frictionless horizontal table. T2 is the tension in the rope between m2 and m3. What is T2?

• 3 N

• 6 N

• 9 N

• 12 N

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

An ice skater is rotating with her arms extended. When she pulls in her arms, her rate of rotation increases. No external torques act on the skater. Which of the following statements is true?

• Her moment of inertia increased.

• Her kinetic energy is conserved.

• Her angular momentum decreased.

• She does work when pulling in her arms.

In a panic, you squeeze the brake handle on your bicycle, lock up the rear wheel, and skid a certain distance on a straight, level path before stopping. If you had been traveling twice as fast, what distance would you have skidded, under the same conditions?

• You would have skidded 4 times farther.

• You would have skidded twice as far.

• You would have skidded 1.4 times farther.

• You would have skidded 8 times farther.

A ball with a mass of 0.500 kg traveling at 4.80 m/s strikes a wall and rebounds in the opposite direction at 3.60 m/s. What is the magnitude of the impulse that acted on the ball during the collision with the wall?

• 0.600 N. s

• 1.20 N. s

• 2.70 N. s

• 4.20 N. s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-2

An Atwood machine is shown in the diagram at the right with m1=0.60 kg and m2=0.40 kg. What is the magnitude of the acceleration of m2? Ignore friction and the mass of the pulley.

• 4.2 m/s2

• 3.3 m/s2

• 2.0 m/s2

• 5.0 m/s2

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A small object is released from rest and falls freely for 4.00 𝑠 until reaching the ground. What was the height above the ground from which the object was released?

• 10.0 𝑚

• 20.0 𝑚

• 40.0 𝑚

• 80.0m

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A person wishes to accelerate an object upward uniformly. Which one of the following choices must be true of the force, 𝐹, provided by the person onto the object? 𝑊 represents the magnitude of the gravitational force acting on the object.

• 𝐹 = 𝑊

• 𝐹 ≥ 𝑊

• 𝐹 > 𝑊

• 𝐹 ≥ 2W

Tags

NGSS.HS-PS2-1