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    • https://phys.libretexts.org/Learning_Objects/Visualizations_and_Simulations/PhET_Simulations/PhET%3A_Forces_and_Motion%3A_Basics
      Explore the forces at work when pulling against a cart, and pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move. Change friction and see how it affects ...Explore the forces at work when pulling against a cart, and pushing a refrigerator, crate, or person. Create an applied force and see how it makes objects move. Change friction and see how it affects the motion of objects.
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.03%3A_Motion_in_One-Dimension/9.3.04%3A_Instantaneous_Velocity
      If the object is moving with constant velocity, then the instantaneous velocity at every moment, the average velocity, and the constant velocity are all the same. In the image above, the red line is t...If the object is moving with constant velocity, then the instantaneous velocity at every moment, the average velocity, and the constant velocity are all the same. In the image above, the red line is the position vs time graph and the blue line is an approximated slope for the line at t=2.5 seconds. For constant velocity motion, the slope gives the constant velocity, the average velocity, and the instantaneous velocity at every point.
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.03%3A_Motion_in_One-Dimension/9.3.05%3A_Average_Acceleration
      Average acceleration, a, is defined as the rate of change of velocity, or the change in velocity per unit time. If the initial velocity is +15.0 m/s and 5.0 s is required to slow down to +5.0 m/s, wha...Average acceleration, a, is defined as the rate of change of velocity, or the change in velocity per unit time. If the initial velocity is +15.0 m/s and 5.0 s is required to slow down to +5.0 m/s, what was the car’s acceleration? Average acceleration is the rate of change of velocity, or the change in velocity per unit time. If an automobile slows from +26 m/s to +18 m/s in a period of 4.0 s, what was the average acceleration?
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/13%3A_Transverse_and_Longitudinal_Waves/13.02%3A_Simple_Harmonic_Motion_and_Oscillations/13.2.01%3A_Anatomy_of_an_Oscillation
      Describing the fundamentals of oscillations.
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/14%3A_Property_of_Sound_Doppler_Effect_and_Interferences/14.10%3A_End_of_Chapter_Key_Terms
      Frequency: The number of vibrations or cycles per second of a sound wave, measured in hertz (Hz), determining the pitch of the sound. Redshift (Sound): The decrease in frequency (and increase in wavel...Frequency: The number of vibrations or cycles per second of a sound wave, measured in hertz (Hz), determining the pitch of the sound. Redshift (Sound): The decrease in frequency (and increase in wavelength) of a sound wave as the source moves away from the observer. Blueshift (Sound): The increase in frequency (and decrease in wavelength) of a sound wave as the source moves toward the observer.
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.06%3A_End_of_Chapter_Key_Terms
      Acceleration: The rate of change of velocity of an object; calculated as change in velocity divided by time (a = Δv/Δt); measured in meters per second squared (m/s²). Projectile Motion: The motion of ...Acceleration: The rate of change of velocity of an object; calculated as change in velocity divided by time (a = Δv/Δt); measured in meters per second squared (m/s²). Projectile Motion: The motion of an object thrown or projected into the air, subject to only the acceleration of gravity. Newton’s Laws of Motion: Three fundamental laws describing the relationship between the motion of an object and the forces acting on it.
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.03%3A_Motion_in_One-Dimension/9.3.08%3A_Acceleration_Due_to_Gravity
      At a given location on the Earth and in the absence of air resistance, all objects fall with the same uniform acceleration. In the absence of air resistance, is the cliff diver’s acceleration 9.81 m/s...At a given location on the Earth and in the absence of air resistance, all objects fall with the same uniform acceleration. In the absence of air resistance, is the cliff diver’s acceleration 9.81 m/s 2 in the simulation below? At any given location on the Earth and in the absence of air resistance, all objects fall with the same uniform acceleration. We call this acceleration the acceleration due to gravity on the Earth and we give it the symbol g.
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.03%3A_Motion_in_One-Dimension/9.3.06%3A_Uniform_Acceleration
      (a) This car is speeding up as it moves toward the right (positive x-direction), so it has positive acceleration in our coordinate system. (b) This car is slowing down as it moves toward the right, so...(a) This car is speeding up as it moves toward the right (positive x-direction), so it has positive acceleration in our coordinate system. (b) This car is slowing down as it moves toward the right, so it has negative acceleration in our coordinate system because the acceleration is toward the left (negative x-direction).
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/14%3A_Property_of_Sound_Doppler_Effect_and_Interferences/14.04%3A_Speed_of_Sound
      Do you think that sound travels more or less quickly through air that contains water vapor? (Hint: Compare the speed of sound in water and air in the table.) Can you calculate the speed of sound in ai...Do you think that sound travels more or less quickly through air that contains water vapor? (Hint: Compare the speed of sound in water and air in the table.) Can you calculate the speed of sound in air and the wave speed on the string in the Violin simulation below? The product of the wavelength and frequency can be used to determine the speed of sound in air and wave speed on the violin string: The speed of sound is the distance that sound waves travel in a given amount of time.
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/09%3A_Motion/9.03%3A_Motion_in_One-Dimension/9.3.10%3A_Velocity_vs._Time_Graphs
      The changing velocity of the sprinter—or of any other moving person or object—can be represented by a velocity-time graph like the one in the Figure below for the sprinter. The sprinter’s velocity inc...The changing velocity of the sprinter—or of any other moving person or object—can be represented by a velocity-time graph like the one in the Figure below for the sprinter. The sprinter’s velocity increases for the first 4 seconds of the race, it remains constant for the next 3 seconds, and it decreases during the last 3 seconds after she crosses the finish line.
    • https://phys.libretexts.org/Courses/Coalinga_College/Physical_Science_for_Educators_(CID%3A_PHYS_14)/13%3A_Transverse_and_Longitudinal_Waves/13.03%3A_Waves_and_Oscillations/13.3.03%3A_Wave_Speeds_in_Materials
      A preliminary discussion of the relationship between wave speed and medium.

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