2.5 
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Interactive Simulations   Position and displacement in one dimension    Displacement and position in two dimensions    Solve v=dx/dt for dt    Velocity, position, and time (basic version)    Velocity, position, and time (more advanced version)    Acceleration (basic version)    Acceleration (more advanced version)    Static equilibrium    Static equilibrium and the lever    Newton's second law (basic version)    Newton's second law (more advanced version)    Circular motion interactive simulation    Orbits of the planets and dwarf planets    Orbits simulation Interactive Calculators   Speed calculator    Velocity calculator    Acceleration calculator    Velocity in accelerated motion    Average velocity calculator    Hooke's law calculator    Torque calculator    Rotational equilibrium and torque    Newton's second law calculator    Momentum calculator    Angular velocity    Linear velocity and angular velocity    Centripetal acceleration    Centripetal force    Law of universal gravitation calculator
1 - Science of Physics
2 - Forces and Motion      Chapter 2 at a glance      2.1 - Motion      2.2 - Force, momentum, and Newton's laws      2.3 - Circular motion      2.4 - Solving harder physics problems      2.5 - Chapter review3 - Energy Transformations4 - Waves and Sound
5 - Electricity and Magnetism
6 - Light and Optics
7 - The Atom
8 - Linear Motion
9 - Vectors and Forces
10 - Forces
11 - Newton's Laws and Gravitation
12 - Circular Motion and Gravitation
13 - Torque and Static Equilibrium
14 - Momentum and Collisions
15 - Angular momentum
16 - Power and Machines
17 - Harmonic Motion
18 - Waves
19 - Sound
20 - Electricity
21 - Electric and Magnetic Fields
22 - Electromagnetism and Induction
23 - Light and Color
24 - Geometrical Optics
25 - Electromagnetic Radiation
26 - The Properties of Matter
27 - Thermodynamics and Heat Transfer
28 - The Atom
29 - The Quantum Theory
30 - TBD
31 - TBD
32 - TBD
33 - TBD
34 - TBD
35 - TBD
36 - TBD
37 - The atomic nucleus and radioactivity
38 - Nuclear reactions
39 - Relativity
40 - Particle physics and the standard model
41 - Electronics (semiconductors)
42 - Nuclear technology
43 - Lasers and photonics
44 - Metals, alloys and materials science
45 - Communications technology
46 - Buildings and structures
47 - Energy technology
48 - Biophysics
49 - Matter and Energy, Space and Time
50 - Energy Transformations
51 - Nanotechnology
52 - Website Videos
53 - ExtraStuff
55 - Modeling Motion, Friction, and Center of Mass
56 - Work and the Conservation of Energy
Chapter 2 Review

    Standardized Test Practice
    1. A ball is rolling along at a steady 2 m/s when it meets a slope. The ball accelerates at 1 m/s2 as it rolls down the hill. How far will the ball move in 3 seconds?
      1. 6 meters
      2. 5 meters
      3. 15 meters
      4. 10.5 meters

    2. A 2 kg box is moving 5 m/s on a frictionless plain. When will it stop?
      1. 1 second
      2. 10 second
      3. 20 seconds
      4. Never

    3. A woman pushes a box on a table. There is friction, but the box still accelerates. Which is the below is the correct free body diagram of this situation?

      Four different free-body diagrams of a box
      1. A
      2. B
      3. C
      4. D

    4. X = AY+½BY2. Solve for B
      1. B= 2( X−AY ) Y 2
      2. B= Y 2( X+AY )
      3. B=X−AY− 1 2 Y 2
      4. B= 2( AY−X ) Y

    5. One lunar cycle is 30 days. Today is Morris' second birthday. How many complete lunar cycles has Morris been alive for?
      1. 60 cycles
      2. 24 cycles
      3. 15 cycles
      4. 182 cycles
      5. 51 cycles

    6. If the slope of a position vs. time graph is decreasing, what does this indicate about velocity over time?
      1. Velocity is increasing.
      2. Velocity is decreasing.
      3. Velocity remains constant.
      4. Velocity is zero.

      Graph of distance vs. time
    1. Calico is driving to work. Which of the following is a possible explanation of the position vs. time graph of her drive?
      1. Halfway to work, she stopped for breakfast. After eating, she realized she was late and sped the rest of the drive.
      2. After going halfway, she had to return home to get something she forgot.
      3. Halfway to work, Calico saw a police officer on the highway and slowed down. She completed her drive without incident.
      4. Halfway to work, Calico was pulled over for speeding. After being issued a ticket, she drove the speed limit the rest of the way.

    2. Jed drops a 1 kilogram box off of the Empire State Building. After 3 seconds, how fast is the box moving?
      1. 44.1 m/s
      2. 29.4 m/s
      3. 9.8 m/s
      4. 3.3 m/s

    3. Tomás turns counterclockwise until he is facing at a right angle to the right of where he started. How many radians did he turn?
      1. 1⁄2 π rad
      2. 6.28 rad
      3. 3⁄2 π rad
      4. 0.75 rad

    4. A wheel on a watermill turns halfway every five seconds. What is the wheel's angular velocity?
      1. 5π rad/s
      2. π⁄5 rad/s
      3. 2.5 rad/s
      4. 25 rad/s

    5. Anthony gets into an elevator and travels 50 m straight up in a time of 5 seconds. He then travels the opposite direction, straight down, for 70 m in a time of 6 seconds. What is his average speed and velocity respectively over the 11 second period?
      1. 10.9 m/s, 1.82 m/s
      2. 10.9 m/s, -1.82 m/s
      3. 21.8 m/s, 10.9 m/s
      4. -10.9 m/s, 5.2 m/s


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