A car travels 65 km in 1 hour. What is its average speed in meters per second?

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Answer 1 · 2018-03-11T16:39:16

#"18.06 m/s"#

#"Average speed" = "Total distance"/"Total time"#

#<< V >> = "65 km"/"1 hour"#

#<< V >> = (65 cancel"km" × "1000 m"/cancel"km")/(1 cancel"hour" × "3600 s"/cancel"hour")#

#<< V >> = ("65000 m")/"3600 s" = "650 m"/"36 s" = color(blue)"18.06 m/s"#

Answer 2 · 2018-03-11T16:39:36

1.81 meters per second

1 km = 1000 m
1 hour = 60 minutes
1 minute = 60 seconds

#(65 km)/(1 hour)* (1000m)/ (1 km) * (1 hour)/(60 min) * (1 min)/(60 sec)# = # (1.81m)/s#

Answer 3 · 2018-03-11T16:42:10

#"18.06 m/s"#

#"65 km = 65000 m"#

#"1 hr = 60 mins = 3600 secs"#

#"speed" = "distance" / "time"#

#"speed" = "65000 m" / "3600 secs"#

#"speed = 18.06 m/s"#