Question

50 km/hr = __?__ m/s

Answer 1

`"13.89 m/s"`

Explanation:

`"50 km/hr"`

Convert `"km"` to `"m"` as we know that `"1 km = 1000 m"`

`50 cancel"km"/"hr" xx "1000 m"/cancel"km" = 50000\ "m/hr"`

Convert `"hr"` to `"min"` as we know that `"1 hr = 60 min"`

`50000 "m"/cancel"hr" × (1 cancel"hr")/"60 min" = "5000"/6\ "m/min"`

Convert `"min"` to `"s"` as we know that `"1 min = 60 s"`

`5000/6 "m"/cancel"min" × (1 cancel"min")/("60 s") = 500/36\ "m/s" ≈ "13.89 m/s"`

Answer 2

`"13.89 m/s"`

Explanation:

To convert speed in kmph to m/s we can simply multiply it by `5/18`. It’s because

`"1 kmph" = 5/18\ "m/s" color(white)(..)` [Click here for derivation]

So, `"50 kmph"` is

`50 cancel"kmph" × 5/18\ "m/s"/cancel"kmph" = 250/18\ "m/s" ≈ "13.89 m/s"`