Final answer:
The acceleration of a 2.0 kg object with a force of 4.0 newtons applied is 2.0 m/s², according to Newton's second law of motion, as acceleration is calculated by dividing the force by the mass.
Step-by-step explanation:
The question is asking about the acceleration of a 2.0 kg object when a force of 4.0 newtons is applied. According to Newton's second law of motion, the acceleration (a) of an object is directly proportional to the net force (F) acting upon it and inversely proportional to its mass (m), represented by the equation a = F/m. Applying this formula:
a = F/m = 4.0 N / 2.0 kg = 2.0 m/s².
Therefore, the correct answer is B. 2 m/s², not to be confused with force measured in newtons (N).