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Projectile Motion Calculator

Calculate projectile range, maximum height, time of flight, and full trajectory from launch angle and initial velocity. Supports custom gravity, initial height, and animated trajectory visualization.

Projectile Motion Calculator
θ H_max Range
v₀ Velocity θ Angle R Range H Height T Time
ℹ Enter initial velocity and launch angle to calculate the full projectile trajectory.
Quick Examples
🎯 45° Optimal 🏀 Basketball ⚽ Soccer Kick 🏌 Golf Drive 🏔 Cliff Launch 🌙 Moon Shot
v₀ m/s
Initial Velocity
θ degrees
Launch Angle
45°
h₀ m
Initial Height (optional)
g m/s²
Gravity
Gravity Presets
🌍 Earth 🌙 Moon 🔴 Mars 🟠 Jupiter 🟡 Venus

Embed Projectile Motion Calculator Widget

About Projectile Motion Calculator

The Projectile Motion Calculator computes the complete trajectory of an object launched at an angle, including horizontal range, maximum height, time of flight, and impact velocity. It supports elevated launches (initial height) and custom gravity for different planets, making it ideal for physics students, engineers, and anyone studying ballistic motion.

Key Formulas

Projectile motion is analyzed by decomposing the initial velocity into horizontal and vertical components and treating each direction independently.

1
v₀ₓ = v₀ cos(θ), v₀ᵧ = v₀ sin(θ)
Velocity decomposition into horizontal and vertical components
2
T = (v₀ᵧ + √(v₀ᵧ² + 2gh₀)) / g
Time of flight (general formula with initial height h₀)
3
H = h₀ + v₀ᵧ² / (2g)
Maximum height above ground
4
R = v₀ₓ × T
Horizontal range (distance traveled)
5
R = v₀² sin(2θ) / g
Range formula for ground-level launch (h₀ = 0)

How to Use This Calculator

  1. Enter the initial velocity: Input the launch speed of the projectile in meters per second (m/s).
  2. Set the launch angle: Enter an angle between 0° and 90° using the input field or the slider. 45° gives maximum range on flat ground.
  3. Adjust optional parameters: Set an initial height for elevated launches (default: 0 m) and choose a gravity preset for different celestial bodies or enter a custom value.
  4. Click Calculate: Press the "Calculate Trajectory" button to see results.
  5. Review results: Examine the key metrics (range, height, time, impact velocity), the animated trajectory plot, step-by-step derivation, and optional data table.

Understanding Projectile Motion

Projectile motion occurs when an object is launched into the air and moves under the influence of gravity alone. The key insight is that horizontal and vertical motions are independent:

The combination of these two motions produces the characteristic parabolic trajectory that defines projectile motion.

The Role of Launch Angle

The launch angle dramatically affects the trajectory shape, range, and maximum height:

Real-World Applications

Sports Physics

Understanding projectile motion helps optimize performance in basketball (free throw arc), soccer (free kicks), golf (drive distance), and javelin throw. Athletes intuitively optimize launch angle and speed for maximum distance or accuracy.

Engineering and Ballistics

Military applications historically drove the development of projectile motion theory. Modern applications include water fountain design, sprinkler systems, and construction equipment (concrete pumps).

Space and Astronomy

Gravity varies significantly across celestial bodies. On the Moon (g ≈ 1.62 m/s²), a projectile travels about 6× farther than on Earth for the same launch conditions. This calculator lets you explore trajectories on different planets.

Forensics and Accident Reconstruction

Investigators use projectile motion equations to determine the speed of vehicles in accidents, the origin of thrown objects, and the trajectory of projectiles in crime scene analysis.

Frequently Asked Questions

What is projectile motion?

Projectile motion is the motion of an object launched into the air that moves under the influence of gravity alone (ignoring air resistance). The object follows a parabolic trajectory, with its horizontal velocity remaining constant while its vertical velocity changes due to gravitational acceleration.

What is the optimal launch angle for maximum range?

For a projectile launched from ground level on flat terrain (no air resistance), the optimal launch angle for maximum horizontal range is 45 degrees. This is because the range formula R = v₀²sin(2θ)/g is maximized when sin(2θ) = 1, which occurs at θ = 45°. When launching from an elevated position, the optimal angle is slightly less than 45 degrees.

How does air resistance affect projectile motion?

Air resistance (drag) reduces both the range and maximum height of a projectile compared to the ideal case. It causes the trajectory to become asymmetric, with a steeper descent than ascent. The optimal launch angle shifts to less than 45 degrees (typically 30-40 degrees depending on the object). This calculator models ideal projectile motion without air resistance, which is a good approximation for dense, compact objects at moderate speeds.

What is the maximum height formula for a projectile?

The maximum height of a projectile launched from height h₀ with initial velocity v₀ at angle θ is: H_max = h₀ + (v₀ sin θ)² / (2g), where g is gravitational acceleration. For ground-level launches (h₀ = 0), this simplifies to H_max = (v₀ sin θ)² / (2g). Maximum height occurs at time t_apex = v₀ sin(θ) / g.

Can this calculator handle launches from elevated positions?

Yes, this calculator supports an optional Initial Height parameter (h₀) for launches from elevated positions such as cliffs, buildings, or platforms. When h₀ is greater than 0, the calculator uses the full quadratic formula to determine the time of flight, which will be longer than a ground-level launch, resulting in greater range and higher impact velocity.

Additional Resources

Reference this content, page, or tool as:

"Projectile Motion Calculator" at https://MiniWebtool.com/projectile-motion-calculator/ from MiniWebtool, https://MiniWebtool.com/

by miniwebtool team. Updated: Mar 14, 2026

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