Question

1km/jam= m/s
54 km/jam = m/s
90 km/jam = m/s
5m/s = km/jam
25m/s = km/jam

Answer 1

1km/jam = 1000/ 3600 m/s
= 0,278 m/s

54 km/jam = 54 . 1000 / 3600 m/s
= 15 m/s

90 km/jam = 90 . 1000 / 3600 m/s
= 25 m/s

5 m/s = 5 3600 / 1000 km/jam
= 18km/jam

25 m/s= 25 3600 / 1000 km/jam
= 90 km/jam