Question

A car travels 68.4 km in 1 hour. What is it's speed in meters per second?

Answer 1

Answer:

speed = distance / time

Distance = 68.4 km = 68.4 ×1000

= 68400m

1 min = 60 sec , 1 hour = 60 min

time = 1 hour

= 60 × 60

= 3600 sec

speed = 68400/3600

= 19 m/s

Answer 2

Answer:

19m/s

Explanation:

speed of car =68.4km/1hr

1km =1000m,1hr=3600s

speed of car in m/s=68.4×1000/3600

=68400/3600

=684/36

=19m/s.....(684is divided by 36)