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  1. Is velocity ever a scalar quantity? - Physics Forums

    Dec 27, 2024 · I thought velocity was always a vector quantity, one with both magnitude and direction. When it came to the suvat equations, where v = final velocity, and...

  2. Phase and group velocity for the wave function - Physics Forums

    Jul 20, 2025 · The discussion centers on the concepts of phase velocity and group velocity in wave functions, specifically in the context of quantum mechanics. The group velocity is defined as \ (v_g = …

  3. Understanding Zero Velocity and Non-Zero Acceleration: Explained

    Aug 1, 2009 · I heard it would be possible to have zero velocity & non zero acceleration (I know the opposite situation where there is velocity (constant), but zero acceleration). Could anyone please …

  4. Average Speed vs. Velocity: Explained - Physics Forums

    Jul 9, 2021 · Though average speed over a finite interval of time is greater or equal to the magnitude of the average velocity, Instantaneous speed at an instant is equal to the magnitude of the …

  5. Calculating Nozzle Flow Rate To work out the flow rate of water from a nozzle we need to work out the volume in a given period of time. To do this we work out the area of the nozzle and then multiply it by …

  6. How to find the equation for the maximum velocity possible

    Feb 13, 2017 · The discussion focuses on deriving the maximum velocity of an object moving in a vertical circle attached to a string, specifically at the bottom of the path where maximum tension …

  7. Can you have a negative average velocity? • Physics Forums

    Sep 3, 2012 · I understand that it's possible to have a negative instantaneous velocity, but I'm wondering if it's possible to have an negative average velocity. For example, let's say you start heading north at …

  8. Torque & Power: Understanding Angular Velocity - Physics Forums

    Sep 9, 2008 · The discussion clarifies the relationship between torque, power, and angular velocity, emphasizing that power is equal to torque multiplied by angular velocity (P = τ × ω). It addresses …

  9. Diving Board Jump: Analyzing Velocity and Height - Physics Forums

    Sep 13, 2013 · Homework Statement A diver jumps off a 3.00 meter high diving board with an initial velocity of 1.75 m/s vertically upward. a) What is the diver's veolcity when she reaches the water? …

  10. At What Velocity Does the Universe Expand and Can It Be Faster than …

    Feb 9, 2016 · You may sometimes see statements that cosmological inflation caused the universe to expand faster than c, or that the edge of the observable universe occurs at the place where the …