Use the drop-down menus to identify the variables for the first hypothesis. Hypothesis #1:
As you build circuits, you will alter voltage, which is the
variable. You will measure how changing the
resistance affects the current, which is the
variable. A "constant" is a parameter that stays the same
regardless of the other variables, and in this case,
is held constant.

Emmy kicks a soccer ball up at an angle of 45° over a level field. she watches the ball's trajectory and notices that it lands, two seconds after being kicked, about 20 m away to the north. assume that air resistance is negligible, and plot the horizontal and vertical components of the ball's velocity as a function of time. consider only the time that the ball is in the air, after being kicked but before landing. take "north" and "up" as the positive ‑ and ‑directions, respectively, and use ≈10 m/s2 for the downward acceleration due to gravity.