Răspuns:
a) 720Km/h= 720x 1000/3600
200m/s
b) 2,4Km/min=2400/60
40m/s
c) 10Km/s= 10000m/s
d) 200dm/min= 200x 0,1/60
0,(3)m/s
ordine descrescătoare: c), a), b), d)
