Question

1 km/hr = x m/s The value of x is:

• A. 2/18
• B. 3/18
• C. 4/18
• D. 5/18

Answer 1

The correct option is D

5/18

1 km = 1000m

1 hr = 60 min

Since, 1 min = 60 sec

1hr = 60 min = 60 $\times$ 60 sec

= 3600 sec

Now,

1km/hr can be written as $\frac{1000m}{3600sec}$ = $\frac{1000}{3600}$m/s = $\frac{10}{36}$ = $\frac{10/2}{36/2}$ = $\frac{5}{18}$ m/s

Thus, 1km/hr = $\frac{5}{18}$ m/s

x = $\frac{5}{18}$