1- ¿Cual es la posicion inicial y final de Javiera y Fernando? 2- Determinen el desplazamiento de cada uno
3- Determinen la velocidad media de Javiera y Fernando.
4- Construyan los graficos de velocidad en funcion del tiempo para Javiera y Fernando.

a longitudinal wave moves energy that is to the direction of the wave’s movement. - true

the total distance that martina travels that day is

(distance from home to mom's office) plus (distance from mom's office to school)

plus (distance from school to library) plus (distance from library to friend's house)

plus (distance from friend's house to martina's house).

(we don't know what any of these distance actually is.)

myth. it was once thought that animals, including cats and dogs, could only see in black and white. however, scientists have proven this to be a myth. in all animals, including humans, the perception of colour is determined by the presence of cells in the eye called cone photoreceptors.