An object slides on a level floor. It slows and comes to a stop with a constant acceleration of magnitude 2.4 m/s2. What is the coefficient of kinetic friction between the object and the floor?

0.245

Explanation:

Force of the object = mass * acceleration of the body = 2.4m where m = mass,

And the Frictional force = force acting on the object due to its acceleration.

The force of normal due to the weight of the body = m*9.81.

Coefficient of kinetic friction = 2.4m / 9.81m = 0.245.