the speed limit on the interstate is 45km/hours convert to meters/second

Question

its about convert km/hours to meters/second.  I need help with that question

Answer 1

45 km/ hr

 

1km =1000 m;  45 km = 45000 m

 

1 hour = 60 min. , 1 min = 60 sec.

 

1 hour = 60 times 60 = 3600 seconds

 

45 km/hr = 45000 m/3600 sec.

 

              =  12.5 m/ second

 

               

Answer 2

This may make more sense if the fractions are written vertically.

(45 km / 1 hour) (1000 m / 1 km)(1 hour / 3600 second)

45000 m / 3600 second

12.5 m / second

 

Answer 3

Use the conversion factors:

 

1 km = 1000 meters

 

1 hour = 3600 seconds

 

 

45 km / hr = 45000 meters / 3600 seconds

 

 

Now just divide the numbers and keep the units.