Final answer:
Using Newton's second law (F = m × a), we find that the acceleration of a 5 kg block being pushed by a force of 40 N is 8 m/s², corresponding to option B.
Step-by-step explanation:
The question asks for the acceleration of a 5 kg block that is being accelerated by a 40 N force. To find the acceleration, we use Newton's second law of motion, which states that force equals mass times acceleration (F = m × a). By rearranging the formula to solve for acceleration, we get a = F/m.
Applying the given values:
- F (force) = 40 N
- m (mass) = 5 kg
We calculate the acceleration as follows:
a = F/m = 40 N / 5 kg = 8 m/s²
Therefore, the acceleration of the block is 8 m/s² which corresponds to option B.