[单选题]
02.30: A box falls to the ground from a delivery truck traveling 2+ mghdvs,gqla o.8r(;na6zksdc;t;5v(7el jvwc g -joac5 4 at 30 m/s. After hitting the road,djz;v5ce wa a nv7c4-k6tg oc(;5jsl; it slides 45 meters to rest. How long does it take the box to come to rest?