Final answer:
Using Newton's second law of motion, the acceleration of a block with a mass of 5kg being pushed by a force of 25N is calculated to be 5 m/s², with A) 5 m/s² being the correct answer.
Step-by-step explanation:
The acceleration of a block that is pushed with a force of 25N and has a mass of 5kg can be calculated using Newton's second law of motion. According to this law, the acceleration a of an object is directly proportional to the net force F acting upon it and inversely proportional to its mass m, which is defined by the equation a = F / m. Plugging the given values into this formula:
a = 25 N / 5 kg = 5 m/s²
Therefore, the correct answer is A) 5 m/s².