Physics

Terminal Velocity Calculator

Find an object's terminal velocity in a fluid.

Mass

Cross-section area

Drag coefficient

Fluid density (kg/m³)

Calculated Output

Terminal velocity 42.784

Terminal velocity 154.02

Formula: vₜ = √(2mg ÷ (ρ·A·Cd))

Step-by-Step Breakdown

1. Values used:

2. Mass = 80

3. Cross-section area = 0.7

4. Drag coefficient = 1

5. Fluid density = 1.225 kg/m³

7. Terminal velocity = 42.784

8. Terminal velocity = 154.02

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The math behind it

vₜ = √(2mg ÷ (air density × area × drag coefficient)). At this speed, net force is zero.

80 kg skydiver (~0.7 m², Cd 1) → ~54 m/s (~195 km/h).

Belly-to-earth?

Larger area lowers terminal velocity; head-down is much faster.