Calculate the acceleration of the system that the coefficient of kinetic friction is 0.38. predict which side of the ramp the system will move

The acceleration of the system is a = 0.38 g. And, the system will move in the direction of the applied force.

Explanation:

Given data,

The coefficient of the kinetic friction, μₓ = 0.38

Let the mass of the body be, m

Let the kinetic frictional acceleration be 'a'

The normal force acting  on the body W = mg

The kinetic frictional force of the body,

                         Fₓ = μₓ W

                          Fₓ = 0.38 mg

                           ma = 0.38 mg

                              a = 0.38 g

Hence, the acceleration of the system is a = 0.38 g. And, the system will move in the direction of the applied force.

c. magnitude and direction

t = 1/400 h   ⇔ 0.0025 h ⇔ 9s ⇔ 0.15 m

any of the answers are correct.