Sheer velocity, by itself, does not possess inherent power. Velocity is a measure of speed in a particular direction and is a component of kinetic energy, which is the energy an object possesses due to its motion. The power or effectiveness of velocity depends on various factors, such as the mass of the object and any external forces acting upon it.
When a rocket is 200,000 feet up and pointed straight down, and the motor ignites, several things can happen depending on the specific circumstances:
Ignition and Thrust: If the rocket's motor ignites successfully and generates thrust, it will begin to accelerate in the opposite direction to its initial velocity. The magnitude of the thrust will determine how quickly the rocket's velocity changes.
Change in Trajectory: As the rocket starts accelerating, it will deviate from its initial straight-down trajectory. The magnitude and direction of the acceleration will determine the new path the rocket follows.
Atmospheric Resistance: As the rocket descends, it will encounter increasing air resistance due to its high velocity. This resistance will act as a force opposing the rocket's motion and can influence its acceleration, stability, and overall performance.
Parachute Deployment: Depending on the rocket's design and purpose, it may be equipped with a parachute or other deceleration mechanisms. These are typically deployed at lower altitudes to slow down the descent and ensure a controlled landing.
It's important to note that attempting to launch a rocket from such a high altitude with the rocket pointing straight down is not a standard launch procedure. Rockets are typically launched from the ground or launch pads with specific launch trajectories to achieve desired orbits or destinations. The scenario you described seems highly unusual and potentially hazardous.