Final answer:
The force of friction opposing Mr. Ramirez's motion as he slides down the hallway is 120.54 N. This is calculated using the coefficient of sliding friction and his weight.
Step-by-step explanation:
The question is asking to calculate the force of friction that opposes Mr. Ramirez's motion as he slides down the hallway. Mr. Ramirez weighs 980 N and has a coefficient of sliding friction of 0.123.
The force of friction (f) can be calculated using the formula f = μN, where μ is the coefficient of kinetic friction and N is the normal force, which in this case is equal to the weight (w) since Mr. Ramirez is sliding on a horizontal surface.
N = w = 980 N.
By substituting the given values into the equation, we find the force of friction to be:
f = 0.123 × 980 N
= 120.54 N.
Therefore, the force of friction that opposes Mr. Ramirez’s motion down the hall is 120.54 N.