Gimaana?

1. 50 m/s = 50 x 3,6 km/jam = 180 km/jam
2. 0,5 km/mnt = 0,5 x 60/1000 = 3/100 km/jam
3. 40 cm/s = 40 x 60/100 = 24 m/menit
4. 50mm/s = 50 x 60/1000 = 0,3 m/mnt
5. 2 cm/s = 2 x 3600/100.000 = 72/1000 = 0,072 km/jam

1. 0,5 km/jam
mungjin cuman itu yang saya tau