Question

A car is traveling 40 kilometers per hour. What is the speed of that car in meters per second?

Answer 1

• Speed of car in km/h=40km/h

We have to convert it to m/s

$\boxed{\sf 1km/h=\dfrac{5}{18}m/s}$

$\\ \sf\longmapsto 40km/h$

$\\ \sf\longmapsto 40\times \dfrac{5}{18}$

$\\ \sf\longmapsto \dfrac{200}{18}$

$\\ \sf\longmapsto 11.1m/s$

Answer 2

km/h > m/s

when converting km/h to m/s all you need to do is divide by 3.6

and vise versa when converting m/s to km/h multiply by 3.6

so therefore,

40km/h > m/s

= 40 / 3.6

= 11.11 m/s (4sf)