Need Help With Answer!
An object slides on a level surface in the +x direction. It slows and comes to a stop with a constant acceleration of -2.45 m/s2. What is the coefficient of kinetic friction between the object and the floor?

A)0.25

B)4.9

C)0.50

D)Impossible to determine without knowing the mass of the object.

Question

Need Help With Answer!
An object slides on a level surface in the +x direction. It slows and comes to a stop with a constant acceleration of -2.45 m/s2. What is the coefficient of kinetic friction between the object and the floor?
	
A)0.25
	
B)4.9
	
C)0.50
	
D)Impossible to determine without knowing the mass of the object.

vincent-lyon.fr · Answer

Have you tried writing the equations for that motion?

anonymous · Answer

No, This is a rushed answer I just need it quick please, I know its not D.

vincent-lyon.fr · Answer

Hi! The thing is OS is here to help you improve what you already can do, not to provide you with ready-made answers.

anonymous · Answer

a = -F/m 

F = - mu m g

a = - mu g.  g = 9.8 m/s^2   etc.

Clever question.