Kinetic Energy:

* Quadruples: Kinetic energy is directly proportional to the square of velocity. This means doubling the velocity increases the kinetic energy by a factor of 4. This has major implications in scenarios like car crashes or projectile motion.

Momentum:

* Doubles: Momentum is directly proportional to velocity. Doubling the velocity directly doubles the momentum of an object. This is important in collisions, where momentum is conserved.

Time to cover a distance:

* Halves: If you double the velocity, you cover the same distance in half the time. This applies to travel, but also to things like how quickly a chemical reaction occurs.

Stopping Distance:

* More than doubles: The stopping distance of a vehicle is proportional to the square of its velocity. Doubling the velocity increases the stopping distance by a factor of 4. This is why speeding is so dangerous.

Other Factors:

* Air Resistance: Air resistance increases significantly with velocity. Doubling the velocity will increase the force of air resistance by a factor of 4.

* Sound: The speed of sound is a constant. However, the loudness (intensity) of sound increases with velocity.

In Summary: Doubling velocity has profound implications for various physical properties and phenomena. It is important to understand these impacts in various contexts, including safety, physics, and engineering.