![]() ![]() This cannot be added, subtracted, multiplied, or divided with other numbers and therefore returns an error. The second reason is an input that contains non-number characters such as a letter. This situation will return infinity and throw an error. The first is an input that results in dividing by zero during calculations. There are two main reasons for invalid inputs causing an error. If the solution is not a finite number, it will throw an error and ask the user to check their inputs. The code also contains logic for catching errors. Calculate impulse by finding force multiplied by the time interval over which the force was applied. Impulse is also known as change in momentum. The function also takes care of all unit conversions for the inputs and output. The Impulse Calculator uses the simple formula JFt, or impulse (J) is equal to force (F) times time (t). It takes the inputted numbers, applies them to the applicable formula, then rounds the answer to the fifth decimal place. This function utilizes all of the equations that were listed in the lesson above. When you click the “calculate” button, the acceleration function runs. This allows a near-instant calculation of the solution. Internet browsers have a built-in JavaScript engine that can run this calculator inside the browser. The calculator on this page is written in the programming language JavaScript. If we are given time instead of distance, we would use equation 1. For example, if we are given the values for initial velocity (v 0), final velocity (v), and distance (Δx), we would use equation 2. We choose a kinematic equation based on what parameters we already know. After rearranging the terms in these three equations to solve for acceleration, they are given as: 1.) a = (v – v 0)⁄ t 2.) a = (v 2 – v 0 2)⁄ 2Δx 3.) a = 2(x – x 0 – v 0t)⁄ t 2 There are four kinematic equations, but only three of them can be used to solve for acceleration. These equations are known as the kinematic equations. You can learn more about this particular example from the 3-phase motor amperage calculator. Of course, we do not always know the change in velocity and elapsed time, so we must sometimes use other equations to solve for acceleration. The three-phase calculator shows you the values of other parameters: Phase current 5 A Line voltage 400 V Phase angle 33 deg Power factor 0.84 Apparent power 5.96 kVA and Reactive power 3.24 kvar. In its simplest form, the equation for acceleration is given as: a = Δv⁄ t Where a is the acceleration of the object, Δv is the change in velocity, and t is the amount of time the change in velocity takes. Acceleration is defined as the rate of change of velocity for an object. ![]()
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