## When a 65 kg Skydiver Jumps from a Plane

### The Initial Plunge

As the skydiver takes the leap of faith, they experience an exhilarating freefall. During this initial phase, gravity exerts its pull, accelerating the skydiver downward at a rate of approximately 9.8 meters per second squared (m/s²). This acceleration causes the skydiver to feel a sensation of weightlessness as they rapidly gain speed.

### Reaching Terminal Velocity

As the skydiver continues to fall, the air resistance acting against them increases. This resistance grows stronger as the skydiver’s velocity increases. Eventually, a point is reached where the force of air resistance becomes equal to the force of gravity pulling the skydiver down. At this point, the skydiver’s velocity stabilizes, and they reach a constant speed known as terminal velocity.

For a skydiver in a standard belly-to-earth position, terminal velocity is typically around 200 kilometers per hour (km/h) or 125 miles per hour (mph). However, factors such as body weight, surface area, and the skydiver’s position can influence the exact terminal velocity.

### Stabilization and Deployment

Once the skydiver has stabilized at terminal velocity, they may choose to stabilize their fall by spreading their arms and legs to increase drag. This helps them descend in a more controlled and comfortable manner.

After reaching a suitable altitude, usually around 1,500 to 2,000 meters (5,000 to 6,500 feet), the skydiver typically deploys their parachute. The parachute’s canopy opens and inflates, rapidly slowing the skydiver’s descent rate.

### Parachute Descent

Once the parachute is fully deployed, the skydiver’s descent rate is significantly reduced to a more manageable speed, typically around 6 to 7 km/h (4 to 5 mph). This slower descent allows the skydiver to gracefully glide and maneuver until landing.

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### Landing

The final stage of the skydive is the landing. As the skydiver approaches the ground, they typically flare the parachute, increasing their angle of attack and reducing their forward speed. This helps them land softly and safely.

### Safety Considerations

Skydiving is a thrilling but inherently risky activity. Several safety precautions must be taken to mitigate potential dangers:

– Skydivers must undergo proper training and certification before jumping.
– Parachutes must be regularly inspected and maintained to ensure proper function.
– Skydivers should jump from suitable altitudes to allow sufficient time for parachute deployment.
– Landing zones should be clear and free of obstacles.

### Conclusion

Jumping from a plane at 65 kg is an exhilarating and demanding skydiving experience. The skydiver experiences an initial freefall followed by a period of stabilization at terminal velocity. Once the parachute is deployed, the descent rate is significantly reduced, allowing the skydiver to maneuver and land safely. While skydiving can be incredibly rewarding, it is crucial to adhere to safety guidelines to minimize risks.

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