Throwing an object into the Earth's atmosphere and ensuring it doesn't return to the surface is indeed possible. Let's explore the factors and mechanisms involved in this process.

Gravity and Escape Velocity:
- The primary force at play here is gravity. Gravity keeps objects on Earth's surface and pulls them towards it. For an object to leave Earth's atmosphere and not return, it needs to overcome the force of gravity.
- To escape Earth's gravitational pull, an object must achieve a specific velocity known as escape velocity. The escape velocity for Earth is about 11.2 km/s (kilometers per second). If an object reaches this velocity, it can break free from Earth's gravity and venture into space.

Throwing an Object with Sufficient Velocity:
- When throwing an object, we need to impart enough velocity to overcome gravity and achieve escape velocity. Simply tossing an object with human strength won't be sufficient to achieve this.
- To reach the required velocity, we would need to employ mechanisms such as rocket propulsion or launch it with a device capable of imparting enough speed.

Using Rocket Propulsion:
- Rockets are specifically designed to achieve escape velocity and overcome gravity. By utilizing rocket engines, they generate enough thrust to propel themselves into space.
- Rockets work on the principle of action and reaction, where the expulsion of high-speed gases creates a force in the opposite direction, pushing the rocket forward.
- By continuously burning propellant and ejecting it at high speeds, rockets gradually gain velocity and eventually reach escape velocity, enabling them to leave Earth's atmosphere.

Factors Affecting Return:
- Several factors determine whether an object will return to Earth after being thrown into space:
1. Escape Velocity: If an object achieves escape velocity, it won't return to Earth.
2. Trajectory: The path an object takes after leaving Earth's atmosphere determines whether it will return or venture further into space. A trajectory that takes it away from Earth's gravitational influence will prevent it from returning.
3. Orbital Mechanics: If an object enters a stable orbit around another celestial body (e.g., the Moon or a planet), it may not return to Earth unless intentionally directed back.
4. Atmospheric Drag: If an object doesn't achieve escape velocity and enters a trajectory that intersects with Earth, atmospheric drag will cause it to slow down and eventually reenter the atmosphere.

In conclusion, it is theoretically possible to throw an object into Earth's atmosphere and prevent it from returning if it achieves escape velocity, is launched with sufficient velocity, and follows a trajectory away from Earth's gravitational pull. However, achieving this requires specialized mechanisms like rocket propulsion.

Yup it is possible but u have to throw the thing a velocity of approx. 11.2 kmps which is also called escape velocity?