Testable hypotheses that lead to experiments usually describe a relationship between &
two measurable variables.
a measurable variable and a subjective opinion.
more than two subjective opinions.
more than two measurable variables.

Consider motion in one dimension. (the sign of the vector quantities is their direction indicator.) an object moves in the positive x-direction with speed 2.9 m/s for 4.5 s. it stops for 3.8 s and then moves in the negative x direction with speed 2.8 m/s for 4 s. what is the total distance traveled by the object in units of meter? enter a number with two digits behind the decimal point.