How to Calculate Projectile Motion
What is Projectile Motion?
Projectile motion describes the parabolic path of an object launched into the air and subject only to gravity (ignoring air resistance). Key equations relate launch speed, angle, maximum height, horizontal range, and time of flight.
Step-by-Step Guide
- 1Horizontal: x = v₀ × cos(θ) × t (constant velocity)
- 2Vertical: y = v₀ × sin(θ) × t − ½ × g × t²
- 3Max height: H = (v₀ × sin(θ))² / (2g)
- 4Range (flat ground): R = v₀² × sin(2θ) / g · max at θ=45°
Worked Examples
Input
Launch 20 m/s at 30°
Result
Range: 35.3m · Max height: 5.1m · Flight time: 2.04s
20²×sin60°/9.81=35.3m
Ready to calculate? Try the free Projectile Motion Calculator
Try it yourself →