Question

The velocity of a car is 18 m/s. This velocity is equivalent to ___ km/h.

• A. 64.8 m/s
• B. 32.6 m/s
• C. 42.4 m/s
• D. 82.6 m/s

Answer 1

The correct option is A 64.8 m/s

$1\frac{m}{sec}=\frac{\frac{1}{1000}km}{\frac{1}{3600}hr}$

$\therefore 1\frac{m}{sec}=3.6\frac{km}{hr}$

$\therefore 18\frac{m}{sec}=18\times 3.6\frac{km}{hr}$

$=64.8\frac{km}{hr}$

Thus, the velocity of the car is 64.8 km/hr.