Question

the velocity of bike is 18 M per second Express in kilometre per hour

Answer 1

18 m/s =18×0.001×0.016 km/hr

Answer 2

Velocity of bike = 18 m/s

We know that 1 m = 1/1000 km
1 s = 1/3600 hr

So , 18 x m/s = 18 x 3600/1000 = 18 x 3.6
= 64.8 km/hr

Hope This Helps You!