Convert 40° into radians. Leave your answers in terms of $\pi$. Answer ... radians Convert 23 km/h into m/s. Answer ... m/s

1. Convert degrees to radians and simplify.

$40^\circ = 40 \times \dfrac{\pi}{180} = \dfrac{40\pi}{180} = \dfrac{2\pi}{9}$ radians

1. Convert $23$ km/h to m/s using the unit conversion factor.

$23\text{ km/h}=23\times \dfrac{1000\text{ m}}{3600\text{ s}}=\dfrac{115}{18}\text{ m/s}=6.388\ldots\text{ m/s}$