La posición de una particula en movimiento a lo largo del eje x está dada por: (21 + 22t – 6.0+?) m, donde t es el tiempo en segundos. ¿Cuál es la velocidad media durante el intervalo det = 1.0s at = 3.0s?

v(avg) = -2.0 m/s

Explanation:

21 + 22t - 6t²    ???

v(avg) = (P(3.0) - P(1.0)) / (3.0 - 1.0)

P(3.0) = 21 + 22(3.0) - 6(3.0)² = 33

P(1.0) = 21 + 22(1.0) - 6(1.0)² = 37

v(avg) = (33 - 37) / (2.0) = -2 m/s

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.

vapour or gas assuming atmospheriv pressure