Dois móveis, A e B, movem-se de acordo com as funções horárias Sₐ = 5 + 3t e Sₒ = 15 + 2t, em unidades do Sistema Internacional.

This is a form of winter precipitation. it is frozen precipitation falling as ice pellets. snowflakes melt into raindrops as they pass through a thin layer of warmer air. the raindrops then refreeze into particles of ice when they fall into a layer of sub-freezing air near the surface of the earth. this precipitation is called a) hail. b) rain. c) sleet. d) snow.