Respuesta :

prgwz

Answer:

1.8 KMH

Step-by-step explanation:

to get the meters per second, simply divide the meters by the seconds. 4.5/9= .5

now, to convert from meters per second to kilometers per hour, multiply the meters per second by 3.6.

.5 x 3.6 = 1.8

Answer:

1.8 km/h

Step-by-step explanation:

Use dimensional analysis:

4.5m/9sec x 0.001km/1m x 3600sec/1hour=

16.2km/9hr=

1.8 km/h