Question

Đổi các đơn vị sau:
a. 45 km/h = ? m/s b. 20m/s = ? km/h

b. 20m/s = ? km/h
c. 6km/h = ? m/p d. 400m/p =? km/h

d. 400m/p =? km/h
e. 3km/h = ? cm/s d. 750/s = ? km/h
f. 750/s = ? km/h
 

Answer 1

\(\left[{}\begin{matrix}45\left(\dfrac{km}{h}\right)=12,5\left(\dfrac{m}{s}\right)\\20\left(\dfrac{m}{s}\right)=72\left(\dfrac{km}{h}\right)\\6\left(\dfrac{km}{h}\right)=100\left(\dfrac{m}{min}\right)\\\left[{}\begin{matrix}400\left(\dfrac{m}{min}\right)=24\left(\dfrac{km}{h}\right)\\3\left(\dfrac{km}{h}\right)=83,\left(3\right)\left(\dfrac{cm}{s}\right)\\\dfrac{750}{s}=\dfrac{km}{h}?????\end{matrix}\right.\end{matrix}\right.\)