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?
4.9
0.50.
Impossible to determine without knowing the mass of the object
0.25.
A person of weight 480 N stands on a scale in an elevator. What will the scale be reading when the elevator is accelerating downward at 4.00 m/s²?
284 N.
676 N.
196 N.
480 N.
