Functions/GenXdev.Helpers.Physics/Get-ImpactVelocityByHeightAndGravity.cs
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using System.Management.Automation; namespace GenXdev.Helpers.Physics { [System.ComponentModel.Description(@" .SYNOPSIS Calculates impact velocity from height. .DESCRIPTION Uses v = sqrt(2 g h) ignoring air resistance. .LICENSE Copyright (C) 2026 René Vaessen / GenXdev This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <https://www.gnu.org/licenses/>. .EXAMPLE ```powershell Get-ImpactVelocityByHeightAndGravity -HeightInMeters 100 -As ""km/h"" ``` Calculates impact velocity for a 100 meter fall and outputs in km/h. .EXAMPLE ```powershell Get-ImpactVelocityByHeightAndGravity 50 ``` Calculates impact velocity for a 50 meter fall using default units. ")] [Cmdlet(VerbsCommon.Get, "ImpactVelocityByHeightAndGravity")] [OutputType(typeof(double))] public class GetImpactVelocityByHeightAndGravityCommand : PSGenXdevCmdlet { /// <summary> /// Height in meters /// </summary> [Parameter( Mandatory = true, Position = 0, HelpMessage = "Height in meters")] public double HeightInMeters { get; set; } /// <summary> /// Gravity in m/s² /// </summary> [Parameter( Mandatory = false, Position = 1, HelpMessage = "Gravity in m/s². Default 9.81.")] public double GravityInMetersPerSecondSquared { get; set; } = 9.81; /// <summary> /// Output unit for velocity /// </summary> [Parameter( Mandatory = false, Position = 2, HelpMessage = "Output unit for velocity. Default 'm/s'.")] [ValidateSet("m/s", "km/h", "mph", "ft/s")] public string As { get; set; } = "m/s"; /// <summary> /// Process record - main cmdlet logic /// </summary> protected override void ProcessRecord() { // Calculate impact velocity using v = sqrt(2 g h) double velocity = Math.Sqrt(2 * GravityInMetersPerSecondSquared * HeightInMeters); // Convert velocity to desired unit using GenXdev\\Convert-PhysicsUnit var script = $"GenXdev\\Convert-PhysicsUnit -Value {velocity} -FromUnit 'm/s' -ToUnit '{As}'"; var results = InvokeCommand.InvokeScript(script); // Output the converted velocity value if (results != null && results.Count > 0) { WriteObject(results[0]); } } } } |