Velocity of air coming out of a nozzle - Physics Forums
2013年5月31日 · The velocity of air coming out of a nozzle is directly proportional to the nozzle diameter. This means that as the diameter of the nozzle decreases, the air velocity increases. This relationship is described by the Bernoulli's principle, which states that as the cross-sectional area of a fluid flow decreases, the velocity of the fluid increases. 2.
How to Determine Velocity from a Force-Time Graph? - Physics …
2015年3月26日 · If the force is constant, the acceleration will also be constant. However, if the force changes over time, the acceleration will also change, resulting in a curved force/time graph. The velocity of an object can be calculated by finding the area under the force/time graph using the formula: velocity = force x time. 2.
Understanding Zero Velocity and Non-Zero Acceleration: Explained
2009年8月1日 · The main difference is that zero velocity refers to the speed of an object at a specific moment in time, while non-zero acceleration refers to the change in an object's velocity over time. In other words, zero velocity indicates that the object is at rest, while non-zero acceleration indicates that the object is in motion. 4.
Coulomb's Law: Determining the velocity of a charge when far apart
2011年2月26日 · According to Coulomb's Law, the force between two charged particles is inversely proportional to the square of the distance between them. This means that as the distance between the particles increases, the force decreases. As a result, the velocity of the charged particle will also decrease as the distance increases. 4.
Spring compressed, find velocity. - Physics Forums
2011年2月8日 · The velocity of a compressed spring can be calculated using the equation v = √ (kx 2 /m), where v is the velocity, k is the spring constant, x is the displacement of the spring from its equilibrium position, and m is the mass of the object attached to the spring. 2.
Finding the velocity at the top of a loop - Physics Forums
2014年6月17日 · FAQ: Finding the velocity at the top of a loop. 1. How do you calculate the velocity at the top of a loop? The velocity at the top of a loop can be calculated using the formula v = √ (rg), where v is the velocity, r is the radius of the …
Can I find time without knowing initial velocity? - Physics Forums
2012年5月19日 · Yes, it is possible to find time without knowing initial velocity if there is both acceleration and deceleration. In this case, you would need to use the average velocity, which is calculated by adding the initial velocity and final velocity and dividing by 2. 4.
Find Velocity given Force and Mass - Physics Forums
2009年3月17日 · Find Velocity given Force and Mass. In summary: F = force ( N or kg m / s 2 ). In summary, the object's velocity at t = 6 s is 4.17 m/s, found by using the formula v = at and solving for v. This can also be represented by the graph of acceleration against time, where the area under the curve from 0-4 seconds represents the integral Ft, or the ...
When does average velocity equal instantaneous velocity?
2010年2月22日 · Average. In summary, the instantaneous velocity is equal to the average velocity at the following moments of time: 0 seconds, 2 seconds, and 8 seconds. This is because at these points, the function for velocity is either a constant or a linear equation, making the instantaneous velocity equal to the average velocity. Feb 21, 2010.
The Physics of Throwing a Ball: Velocity & Acceleration
2004年9月23日 · 401. 1. The acceleration due to gravity never changes and is always 9.8 m/s 2. Neglecting air resistance, we can therefore reason that the speed of the ball at a certain vertical height when thrown up is the same as its speed at the same vertical height when it falls to Earth after being thrown. The velocity, however, changes because the ball ...