Chapter 1 - Concepts of Motion - Exercises and Problems - Page 29: 26

a) $≈ 12in$ b) $≈ 50mph$ c) $≈ 3mile$ d) $≈ 0.25in$

Using data from the approximation table specified in the question, multiply each of the given units by the ratio between units. a) $30cm \times \frac{4in}{10cm} ≈ 12ft$ b) $25m/s \times \frac{2mph}{1m/s} ≈ 50mph$ c) $5km \times \frac{0.6mile}{1km} ≈ 3miles$ d) $0.5cm \times \frac{0.5in}{1cm} ≈ 0.25in$