Final answer:
The acceleration of the astronaut using a jet pack is calculated using Newton's second law of motion, resulting in a value of 0.33 m/s². So the correct option is D.
Step-by-step explanation:
The question is asking for the acceleration of an astronaut using a jet pack with a given thrust force. According to Newton's second law of motion, acceleration (a) can be calculated by dividing the force (F) by the mass (m) of the object. The formula is a = F/m. Given that the thrust force (F) is 25 N and the mass (m) of the astronaut, with suit and jet pack on, is 75 kg, the acceleration (a) would be:
a = F/m = 25 N / 75 kg = 0.3333 m/s²
Therefore, the correct answer is D. 0.33 m/s².