An object glides on a horizontal tabletop with a coefficient of kinetic friction of 0.55. If its initial velocity is 4.1 m/s, how long does it take for the object to come to rest?

Answer 1

F = m a

-.55 * m * g = m * a

a = -.55 g = -5.39

v = Vi + a t
0 = 4.1 -5.39 t

t = 4.1/5.39