Question

$35\frac{m}{s}=$ ___ $\frac{km}{h}$

• A. 124 $\frac{km}{h}$
• B. 126 $\frac{km}{h}$
• C. 216 $\frac{km}{h}$
• D. 128 $\frac{km}{h}$

Answer 1

The correct option is B

126 $\frac{km}{h}$

We know, 1 $\frac{km}{h}$ = $\frac{5}{18}$ $\frac{m}{s}$

$\Rightarrow$ 1 $\frac{m}{s}$ = $\frac{18}{5}$ $\frac{km}{h}$

Now, 35 $\frac{m}{s}$ = 35 $\times$ 1 $\frac{m}{s}$

= 35 $\times$ $\frac{18}{5}$ $\frac{km}{h}$

= 7 $\times$ 18 $\frac{km}{h}$

= 126 $\frac{km}{h}$