Question

If there is friction between the block and restiong surface how will it govern the motion of the block​

Answer 1

If friction is removed between block and surface:

• Friction usually acts an dissipative force, responsible for inhibiting the relative motion between the surfaces.

• So, friction is necessary for decreasing the velocity of the block, when projected with an initial velocity.

• However, let's assume that friction is removed between the surfaces.

• Once friction is removed , the block doesn't experience any external forces.

• Hence, the block when starts with an initial velocity will remain unchanged. This is in accordance to the NEWTON'S 3RD LAW.

• So, 2 cases are possible:

1. If car remains at rest, the car will always remain at rest.
2. If car moves, it will always move with a constant velocity.

$\star$ Hope It Helps.

Answer 2

Explanation:

if friction is removed between block and surface:

so, friction is necessary for decreasing the velocity of block , when projected with an initial velocity.