What do you need in order to be able to calculate the speed of an object

The conflict perspective explains deviance in terms of power and inequality. select the best answer from the choices provided t f

John lennon and paul mccartney belonged to this group

Chen's research team randomly assigned some newborns and their mothers either to a breastfeeding promotion group (where breastfeeding was encouraged, but not required) or to a normal pediatric care group (where breastfeeding was neither encouraged nor discouraged). which research method did they use?