Q.Convert 72 km/h into m/s.
Formula : km/h → m/s
Multiply by 5/18
Ans: 20 m/s
km/h → m/s = × 5/18
72 × 5/18 = 20 m/s
Shortcut: Divide by 18, then multiply by 5.
Practice set : Type 4: km/h → m/s
Q1. Convert 36 km/h into m/s.
A. 5 m/s B. 10 m/s C. 15 m/s D. 20 m/s
Q2. Convert 54 km/h into m/s.
A. 10 m/s B. 12 m/s C. 15 m/s D. 18 m/s
Q3. Convert 90 km/h into m/s.
A. 20 m/s B. 25 m/s C. 30 m/s D. 35 m/s
Q4. Convert 108 km/h into m/s.
A. 25 m/s B. 30 m/s C. 35 m/s D. 40 m/s
Q5. Convert 126 km/h into m/s.
A. 30 m/s B. 35 m/s C. 40 m/s D. 45 m/s
Trick
Ex: 72 × 5/18 = 20 m/s