Physics

Projectile Motion Calculator – Tutorial

On this page, you can find the logic, usage, and important details of the Projectile Motion Calculator calculator.

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Summary

Projectile motion occurs when an object is launched from a position at an angle to the horizontal. In the standard model, air resistance is ignored and only gravitational acceleration (g) acts. Key equations (2D, x-y plane): - Initial velocity components: vₓ = v₀ · cos(θ) vᵧ₀ = v₀ · sin(θ) - Position equations: x(t) = vₓ · t y(t) = y₀ + vᵧ₀ · t − ½ · g · t² - Flight time (positive root of y(t) = 0): t_f = (vᵧ₀ + √(vᵧ₀² + 2·g·y₀)) / g - Maximum height: t_peak = vᵧ₀ / g y_max = y₀ + vᵧ₀² / (2·g) This tool: - Finds flight time, range, and maximum height from v₀, θ, and y₀, - Samples the trajectory at regular intervals (Δt) and displays it in a table.

Input Fields

Initial velocity v₀ (m/s)
Type: number
Example: E.g.: 20
Launch angle θ (degrees)
Type: number
Example: E.g.: 30, 45, 60
Initial height y₀ (m)
Type: number
Example: E.g.: 0 (ground) or 5 (elevated)
Gravitational acceleration g (m/s²)
Type: number
Example: E.g.: 9.81
Advanced parameter
Sampling step Δt (s)
Type: number
Example: E.g.: 0.1
Advanced parameter
Decimal places
Type: number
Example: E.g.: 2 or 3
Advanced parameter