Understanding Zero Velocity and Non-Zero Acceleration: Explained
2009年8月1日 · 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.
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 …
Escape Velocity Question: Why is the final kinetic energy = 0?
2020年12月13日 · The discussion revolves around the concept of escape velocity, specifically addressing why the final kinetic energy of an object is considered to be zero when it reaches an …
Relative Velocity of Rain Drops in a Moving Vehicle
2009年10月16日 · 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 …
Why a force perpendicular to the velocity doesn't change the …
2020年1月10日 · 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 …
Velocity operator, its expression and eigenvalues - Physics Forums
2023年1月10日 · Discussion Overview The discussion centers on the definition and implications of the velocity operator in quantum mechanics, exploring its expression, eigenvalues, and the relationship …
Velocity Ratio, mechanical advantage, Efficiency of a screw jack
2020年7月16日 · The Velocity Ratio is calculated as VR = 94.2 using a lead screw of 12 mm and a radius of 180 mm. The Mechanical Advantage is determined to be 24.51, based on a load of 200 kg …
Why Do Objects Only Reach 95% of Their Terminal Velocity?
2014年7月18日 · The discussion revolves around the concept of terminal velocity and why falling objects are said to reach approximately 95% of their theoretical terminal velocity rather than achieving it …
Should a Velocity vs. Height Graph for a Parachute Be Linear?
2006年10月7日 · The discussion revolves around the analysis of a velocity versus height graph for a parachute experiment conducted as part of A-level coursework. The original poster expresses …
Exit velocity through a nozzle: Bernoulli vs. Experience
2023年6月25日 · The discussion revolves around the exit velocity of fluid through a nozzle, comparing theoretical predictions from Bernoulli's equation with real-world experiences. Participants explore the …