Answer:
1) 43.2 kilometres per hour
2) 86.4 kilometres
Step-by-step explanation:
To convert m/s to km/hr...;
you multiply your speed in m/s by 3600/1000
12m/s in km/hr
; 12 × 3600/1000
Hence the speed = 43.2 kilometres per hour
Kilometres travelled in 2hrs
; Distance = Speed × Time
; Distance = 43.2 × 2
; the distance travelled = 86.4 km/hr