[填空题]
A box is given a push so that it slides ac0how fo(6m8il*7rkcgk,t y 6n ross the floors qw8liyv,)59n nn:kl4vx -ax . How far will it go, given that the coefficient 9x-,na qlnxiy4 v 85s)nlwvk: of kinetic friction is 0.20 and the push imparts an initial speed of 4.0 $\mathrm{~m} / \mathrm{s}$ ?
