Final answer:
The magnitude of the acceleration of the block is 1.33 m/s².
Step-by-step explanation:
The magnitude of the acceleration of the block can be calculated using the formula:
a = F / (M * g)
where a is the acceleration, F is the force applied, M is the mass of the block, and g is the acceleration due to gravity.
Substituting the given values, we get:
a = 65.0 N / (5.00 kg * 9.8 m/s²) = 1.33 m/s²
Therefore, the magnitude of the acceleration of the block is 1.33 m/s².