The acceleration of 9 kg rock and being acted upon by a 36 N force would be 4 m/s2
Recall Newton's law of motion which says that the magnitude of a force (F) needed to accelerate (a) a body with mass (m) is the product of the acceleration and the mass of the body.
In other words; F = ma
Thus, a = F/m
In this case, F = 36 N and m = 9 kg
acceleration (a) = 36/9
= 4 m/s2
More on Newton's second law of motion can be found here: https://brainly.com/question/13447525
