Newton's Third Law of Motion
Newton's third law states that when something exerts force on another thing, that object also exerts a force equal to the magnitude and direction as the first object, or action reaction. In terms of rocketry, thrust is the reaction and the action would be from the engine when it is ignited causing a small explosion.
The Engine
Engines
Fail Senario
When the Eggscaliber is launched with a D12-0 engine, there is no delay time between the time when the engine shuts off to when the parachute is deployed. The sudden change of force can easily break the egg. To avoid total fetus annihilation, it is best to use B6-2, C6-3, C11-3, D12-3, E9-4.
Tercel Engines
The Tercel takes three engines; the 1/2 A3-2T, the A3-4T, and the A10-3T. The main differences are the amount of impulse, the amount of Newtons, and the delay time. The first engine has half the impulse, 3 Newtons of force, and 2 seconds of delay time. The last engine has more impulse, 10 Newtons of force, and 3 seconds of delay time.