The maximum force of friction:
F = μ* N, where μ is the friction coefficient and N id the force of the doghouse normal to the surface.
N for a flat surface would be: N = m*g, where m is the mass and g is the gravitational acceleration = 9,81 m/s².
Combined:
F = μ * g * m
Force=mass*acceleration
F=ma
F=25*5
F=100 N
Answer:
A,B,C,D the answer is { }
A reactant since it is on the left of the arrow