2 sentences with 'friction'

Example sentences and phrases with the word friction and other words derived from it.

• « The hypersonic speeds anticipated for the X-30 will cause temperatures of more than 2,700 degrees in some parts of the aircraft, due to friction with the atmosphere. »

• « Taking this into account, the railway tracks are laid apart from section to section, because the heat produced by the sun and the friction of the wheels would lift the rails as they expand. »