Question

bt sau :)

cơ bản->:( master:a)1km=?m/s

1m/s=?km/h

13km/h=?m/s

5,5km/h=?m/s

trường hợp bất hợp pháp sau:4m/s=?cm/h 

Answer 1

\(1km=1000m\\ 1\left(\dfrac{m}{s}\right)=3,6\left(\dfrac{km}{h}\right)\\ 13\left(\dfrac{km}{h}\right)=\dfrac{65}{18}\left(\dfrac{m}{s}\right)\\ 5,5\left(\dfrac{km}{h}\right)=\dfrac{55}{36}\left(\dfrac{m}{s}\right)\\ 4\left(\dfrac{m}{s}\right)=\dfrac{1}{9}\left(\dfrac{cm}{h}\right)\)