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Homework Statement:
 A 50.0 kg person is walking horizontally with a constant acceleration of 0.25 m/s2 inside an elevator. The elevator is also accelerating downward at a rate of 1.0 m/s2. Find the force of friction between his shoes and the elevator. What minimum coefficient of friction between his shoes and the floor would make this scenario possible?
Relevant Equations:

Fg = mg
Fn = mgma
Fnet = ma
Ff = u * Fn
Fg = mg
= 50 * 10
= 500 N
Fn = mgma
= 500  (50.0)(1.0)
= 50050
= 450
I don't necessarily know if this is right and I can't seem to find the Ff or coefficient of friction either. Please Help!
= 50 * 10
= 500 N
Fn = mgma
= 500  (50.0)(1.0)
= 50050
= 450
I don't necessarily know if this is right and I can't seem to find the Ff or coefficient of friction either. Please Help!