Ram is travelling at a speed of 72 km per hour while Shyam is travelling at a speed of 90 km per hour. What is the difference in their speeds (in metres per second)?
Answer & explanation
Correct answer: option 1
Difference Speed = 90 - 72 = 18 km/h
18 km/h = 18 × \(\frac{5}{18}\) = 5 m/sec
So , Speed is 5 m/sec