A rock is thrown with a velocity v0, at an angle of ?0 from the horizontal, from the roof of a building of height h. Ignore air resistance. Calculate the speed of the rock just before it strikes the ground, and show that this speed is independent of ?0.
Psych 2300: Psychology Research Methods 6/15/16 Chapter 3: Claims and Validities Tools for Interrogating Research Part 1: Variables Variable: anything that takes on multiple (at least 2) levels Independent variable: taking on multiple levels manipulated by experimenter: manipulated Dependent variable: taking on multiple levels affected by the independent variable; measured Constant: has more than one level, but is SET TO ONLY ONE LEVEL Independent: Left handed or right handed Dependent: Handwriting Constant: writing on college ruled paper or papyrus [Variable=paper type can take on multiple levels; setting it to one level] Conceptual variables : variables that cannot be measured out directly; they are abstract - [CON
