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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 nature of velocity and acceleration in problem-solving
Addition of Velocities (Velocity Composition) in Special Relativity The “Addition of Velocities” formula (more correctly, the “Composition of Velocities” formula) in Special Relativity v A C c = v A B c + v B C c 1 + v A B c v B C c is a non-intuitive result that arises from a “hyperbolic-tangent of a sum”-identity in Minkowski spacetime geometry, with its use of hyperbolic trigonometry However, I claim it is difficult to obtain this by looking at
Calculating Nozzle Flow Rate - Physics Forums 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 the velocity of the water coming from the nozzle to give us volume per unit of time
Understanding Zero Velocity and Non-Zero Acceleration: Explained 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 give me a clue on this? Thanks in advance
Average Speed vs. Velocity: Explained - Physics Forums 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 instantaneous velocity at that instant Why so?
Is velocity ever a scalar quantity? • Physics Forums 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 u = initial velocity, I thought both of those were vector quantities, e g; v (final velocity) 112km hr North u (initial velocity) 0km hr
Using entry level physics to calculate minimum velocity required. Homework Statement A person is trying to jump over the pit in a car I need to find what is the minimum speed required to make it over This speed is calculated not from the start of the ramp, but from the take off Drawing of all the elements Please excuse my ugly drawing :P Homework