A car covers a distance of 180 km in 10 hrs. What is its speed in mps.  Choose the most appropriate option:
A) 40 m/s
B) 5 m/s
C) 20 m/s
D) 15 m/s
E) 16 m/s
Explanation:   Distance = Speed x Time   Speed = (180/10)= 
<gadget id="calculator">(180/10)</gadget>
<output>18</output>
18 kmph   Spees in mps= 18 x 5/18 = 1 x 5 = 5 mps.   Answer: Option 5 m/s
<result>B</result>
A car covers a distance of 180 km in 10 hrs. What is its speed in mps.