MEDAL GIVEN TO CORRECT ANSWER.
You slide across a wooden floor in your socks. There is a normal force of 800 N acting on you, and the coefficient of kinetic friction is 0.44. What is the force of friction acting on you as you slide?

A. 218 N
B. 400 N
C. 429 N
D. 352 N

Question

MEDAL GIVEN TO CORRECT ANSWER. 
You slide across a wooden floor in your socks. There is a normal force of 800 N acting on you, and the coefficient of kinetic friction is 0.44. What is the force of friction acting on you as you slide?

 		A.	218 N
 		B.	400 N
 		C.	429 N
 		D.	352 N

anonymous · Answer

recall: force = (coefficient of friction)(weight)

anonymous · Answer

Is it the same thing even when i have no mass? 
how would i solve for weight if theres no "m"? @douglaswinslowcooper

anonymous · Answer

They have given you  the weight, 800 N, by calling it the "normal force," meaning the force that is at right angles to the floor, so up and down. 

m g = 800N

friction = (coefficient) (normal force, which is weight)

calculate and celebrate!

kittiwitti1 · Answer

$$\mu = 0.44,~N=800~N$$$$f=\mu N=0.44\times 800=352~N~of~friction$$

anonymous · Answer

@kittiwitti1 is correct.

kittiwitti1 · Answer

By the way, the variable N is normal force. It's also written like this: $$F_N$$

anonymous · Answer

The answer is D) 352 N because 800 N X (.44) = 352 N

kittiwitti1 · Answer

@Lkrqmr I already answered that LOL, but I'll give you a medal for the right answer.