Answer:
Step-by-step explanation:
velocity=s/t
given distance is 480 km we have to convert it into meter because the unit of distance is meter
1 km=1000 m
480 km=480000 m =4.8*10^5
1 hour= 3600 s
12 hour =43200 s
now velocity=s/t
v=4.8*10^5/43200
v=11.11 m/s