Respuesta :

altavistard

Answer:

Step-by-step explanation:

Let's convert one of these measurements so that both measurements have the same units.  15 m/sec is equivalent to 0.015 km/sec, which in turn is equivalent to

0.015     km      3600 sec  

--------- --------  ----------------- = 54 km/hr

    1        sec       1 hr

This latter result (54 km/hr) is faster than (40 km/hr).
15 meters per second is equivalent to 54 kilometres per hour.