Why is momentum equal to mass times velocity? - Physics Forums
Sep 22, 2023 · The discussion revolves around the definition of momentum, specifically why it is expressed as the product of mass and velocity (p = mv) rather than other combinations like mass …
Centrifugal Compressor: Absolute Velocity Calculation
Jan 28, 2024 · The discussion revolves around calculating the absolute velocity of air at the outlet of a centrifugal compressor, focusing on the relationships between impeller diameter, RPM, and slip …
Understanding Zero Velocity and Non-Zero Acceleration: Explained
Aug 1, 2009 · The discussion centers on the concept of having zero velocity while experiencing non-zero acceleration, exploring various scenarios and interpretations within the context of physics.
Torque & Power: Understanding Angular Velocity - Physics Forums
Sep 9, 2008 · The discussion revolves around the relationship between torque, power, and angular velocity, particularly in the context of rotating systems. Participants explore how torque can exist in …
Numerade
Confusing speed with velocity, neglecting the directional component of velocity. Overlooking that deceleration is still a form of acceleration (negative acceleration). Failing to correctly apply the vector …
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 …
Calculating Velocity of a Falling Object with Drag Force
Aug 1, 2011 · The discussion revolves around calculating the velocity of a falling object experiencing drag force proportional to its velocity. The original poster presents a problem involving forces acting …
Why a force perpendicular to the velocity doesn't change the …
Jan 10, 2020 · A participant points out that for a change in direction, the acceleration must remain perpendicular to the velocity at all times, particularly in circular motion. It is noted that if the force is …
How can I calculate the Reynolds number if the particle velocity is ...
Jun 6, 2018 · The discussion revolves around calculating the Reynolds number when the particle velocity is unknown, particularly in the context of determining particle settling velocity in a fluid. …
Relative Velocity of Rain Drops in a Moving Vehicle
Oct 16, 2009 · The problem involves analyzing the relative velocity of raindrops as observed from a moving vehicle during a rainstorm. The original poster describes two scenarios: driving north at 25 …