The friction coefficient between the object and the horizontal plane is 0.2 The friction coefficient between the object and the horizontal plane is 0.2. What is the velocity of the object at the end of 2S? If f is changed to vertical downward pressure after 2S, how far can the object move?

The friction coefficient between the object and the horizontal plane is 0.2 The friction coefficient between the object and the horizontal plane is 0.2. What is the velocity of the object at the end of 2S? If f is changed to vertical downward pressure after 2S, how far can the object move?

Friction f = μ mg = 0.2 * 10.1 = 2 n f resultant force = f-f = 6-2 = 4 n
Acceleration a = f resultant force / M = 4 / 1 = 4 m / S ^ 2 v = at = 4 * 0.2 = 0.8 m / S
A = μ (Mg + F) / M =, then s = V * 2 / 2A=