Question

A block B is pushed momentarily along a horizontal surface with an initial velocity V. If μ is the coefficient of sliding friction between B and the surface , block B will come to rest after a time

(a) gμ/V

(b) g/v

(c) V/g

(d) V/(gμ).

Answer 1

Correct option (d) V/(gμ).

Explanation:

Given u = V, final velocity =  0.

Using v =  u + at