konversikanlah kelajuan berikut ini 20km/jam=.... m/s 40m/s=.... km/jam

•
20 km/jam
= 20000 m/ 3600 s
= 50/9 m/s
= 5,55 m/s

•
40 m/s
= (40/1000) m / (1/3600) jam
= 4/100 × 3600
= 144 km/jam