Rates, SM-Bank 057 The top speed of an ostrich is 72 kilometres per hour. What is this speed in metres per second? (2 marks) Show Answers Only \(20\ \text{m/s}\) Show Worked Solution \(72\ \text{km/h}\) \(=72\ 000\ \text{m/h}\) \(=\bigg(\dfrac{72\ 000}{60\times 60}\bigg)\ \text{m/s}\) \(=20\ \text{m/s}\)