A person crosses a 600 m long street in 5 minutes. What is his speed in km per hour?
Answer & explanation
Correct answer: option 2
Speed = \(\frac{ Distance}{ Time}\)
Speed = \(\frac{600}{ 300}\) m/s
Speed = 2m/s
Speed in km/hr - 2 x \(\frac{ 18}{ 5}\) = \(\frac{36 }{5 }\) = 7.2 km/hr
*Note*
In order to convert km/hr to m/s - multiply by \(\frac{ 5}{ 18}\)
In order to convert m/s to km/hr - multiply by \(\frac{ 18}{ 5}\)