Question

change the speed 6m/s into km/h. with explanation

Answer 1

hey here is your answer

speed = 6m/s and to change 6m/s into km/h :
1 m = 10^-3 & 1 s = 1/3600 hr

6×10^-3/1/3600 = 6×10^-3×3600 = 21.6km/h

hope it helps
have a good day dear ☺

Answer 2

$6m/s = 6 \times ( \frac{3600}{1000}) km/h = 21.6 km/h$