Final answer:
The acceleration of a 50 kg model rocket with a 400 N thrust force, assuming no air resistance, is 8 m/s², calculated using Newton's second law of motion (F = ma).
Step-by-step explanation:
The question is asking about the acceleration of a model rocket with a mass of 50 kg and a thrust force of 400 N. To find the acceleration, we can use Newton's second law of motion, which states that the force acting on an object is equal to the mass of the object multiplied by its acceleration (F = ma). Therefore, to find the acceleration (a), we divide the thrust force (F) by the mass (m) of the rocket. The calculation would be a = F / m = 400 N / 50 kg, which results in an acceleration of 8 m/s². This calculation assumes that there are no other forces acting on the rocket such as air resistance.