a 5.00 Lb box sliding with a speed of 14.0 ft/sec along a horizontal surface encounters a rough area of the surface and comes to a stop at 1.35 sec

a 5.00 Lb box sliding with a speed of 14.0 ft/sec along a horizontal surface encounters a rough area of the surface and comes to a stop at 1.35 sec later.what is the deceleration of the box?what is the coefficiant of kenetic friction in the rough area of the surface?what distance does the box cover before coming to a stop?