Final answer:
The average magnitude of the resistance force exerted on the woman by the water is approximately 529.2 N.
Step-by-step explanation:
The average magnitude of the resistance force exerted on the woman can be found using the equation F = mg, where F is the force, m is the mass, and g is the acceleration due to gravity. In this case, the woman's mass is 54.0 kg. The acceleration due to gravity is approximately 9.8 m/s2. Therefore, the average magnitude of the resistance force is:
F = (54.0 kg)(9.8 m/s2) = 529.2 N
So, the average magnitude of the resistance force exerted on the woman by the water is approximately 529.2 N.