Classical Kinematics & Dynamics Engine

Motion, Mechanics & Gravity

Rigorous physics calculations for planetary gravitational free fall, vehicular braking distances across surface friction coefficients, and 2D parabolic projectile trajectories.

Free Fall Time

Earth, Moon, Mars & Jupiter

Braking Distance

Speed, Friction & Reaction

Projectile Motion

2D Trajectory & Range Plotter

Free Fall Drop Time & Impact Velocity

Classical Newtonian Kinematics in Vacuum (NIST Reference CODATA)

t = √(2h / g) | v = √(2gh) = g · t

Drop Height (m)

Gravitational Field (Planet)

Quick Presets:

Time of Fall (Duration)g = 9.81 m/s²

1.428 s

Elapsed duration for an object to reach ground in vacuum from 10 m.

Terminal Impact Velocityv = √(2gh)

14.01 m/s

50.4 km/h31.3 mph

Drop Time Comparison Across Solar System (10.0m Drop)

t ∝ 1/√g

Earth (g = 9.81)1.43s • 50 km/h

Moon (g = 1.62)3.51s • 20 km/h

Mars (g = 3.71)2.32s • 31 km/h

Jupiter (g = 24.79)0.90s • 80 km/h

Venus (g = 8.87)1.50s • 48 km/h

Mercury (g = 3.7)2.32s • 31 km/h

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Curated Laboratory & Study Equipment

Recommended Classical Mechanics & Physics Literature

Hand-selected peer-reviewed literature, optical instruments, and mechanics resources verified by physics educator Traian Anghel.

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Physics for Scientists and Engineers

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Automotive Braking & Total Stopping Distance

AASHTO Geometric Highway Design & Newtonian Friction Model

d_total = d_reaction + d_braking = (v · t_react) + (v² / (2 · μ · g))

Vehicle Speed

Road Surface (μ = 0.70)

Reaction Time (1.5s)

Speed Presets:

Total Stopping Distance

34.9 meters

Vehicle Equivalent≈ 7.8 Car Lengths

1. Perception & Reaction Distance60%

20.8 m

Distance traveled during 1.5s before pressing the brake pedal.

2. Physical Braking Distance40%

14.1 m

Tire friction work required to dissipate kinetic energy (v²/(2μg)).

Reaction: 20.8mBraking: 14.1m

Quadratic Kinetic Energy Law: Braking distance grows with the square of speed (v²). Doubling your speed from 50 km/h to 100 km/h quadruples (4×) your braking distance from 14.1m to 56.2m on Dry Asphalt.