Which motor is known for having the highest total impulse?

The K200 motor is known for having the highest total impulse among the options provided. Total impulse is a measure of the total energy produced by a rocket motor during its burn time, which directly influences the performance and altitude that can be achieved by the rocket.

In the realm of rocketry, motors are classified into different lettered categories (e.g., J, K) based on their total impulse. The higher the letter designation, the greater the impulse. The K200 specifically falls into the K category, which denotes a higher range of thrust compared to motors classified as J or lower.

This means that the K200 motor would produce significantly more thrust over its burn time than the J400, J320, or K100. The combination of higher thrust and prolonged burn time allows rockets using this motor to reach higher altitudes and carry heavier payloads, making it particularly valuable for advanced amateur rocketry and competition flights.