Answer:
C 5.0 m/s²
Step-by-step explanation:
Given data
Mass (m): 9.0 kg
Force (F): 45 N
A 9.0-kg crate rests on a frictionless surface, thus, the only horizontal force to consider is that of 45 N. We can find the acceleration of the 9.0-kg crate due to the 45 N force using Newton's second law of motion.
F = m × a
a = F/m = 45 N/9.0 kg = 5.0 m/s²